1.  The rank, quality, state, or attributes of a king; royal authority; sovereign power; rule; dominion; monarchy. [1913 Webster]
"Thy kingdom is an everlasting kingdom." [1913 Webster]
"When Jehoram was risen up to the kingdom of his father, he strengthened himself." [1913 Webster]

2.  The territory or country subject to a king or queen; the dominion of a monarch; the sphere in which one is king or has control. [1913 Webster]
"Unto the kingdom of perpetual night." [1913 Webster]
"You're welcome,
Most learned reverend sir, into our kingdom." [1913 Webster]

3.  An extensive scientific division distinguished by leading or ruling characteristics; a principal division; a department; as, the mineral kingdom. In modern biology, the division of life into five kingdoms is widely used for classification. [1913 Webster]

kingdom, n.
1 an organized community headed by a king.
2 the territory subject to a king.
3 a the spiritual reign attributed to God (Thy kingdom come). b the sphere of this (kingdom of heaven).
4 a domain belonging to a person, animal, etc.
5 a province of nature (the vegetable kingdom).
6 a specified mental or emotional province (kingdom of the heart; kingdom of fantasy).
7 Biol. the highest category in taxonomic classification.

Idiom:
come into (or to) one's kingdom achieve recognition or supremacy. kingdom come sl. eternity; the next world. till kingdom come sl. for ever.

Derivative:
kingdomed adj.

Etymology:
OE cyningdom (as KING)

N  class, division, category, categorema, head, order, section, department, subdepartment, province, domain, kind, sort, genus, species, variety, family, order, kingdom, race, tribe, caste, sept, clan, breed, type, subtype, kit, sect, set, subset, assortment, feather, kidney, suit, range, gender, sex, kin, manner, description, denomination, designation, rubric, character, stamp predicament, indication, particularization, selection, specification, similarity.

N  government, legal authority, soveriegn, sovereign authority, authority, master, direction, national government, nation, state, country, nation- state, dominion, republic, empire, union, democratic republic, kingdom, principality, state government, state, shire, province, county, canton, territory, duchy, archduchy, archdukedom, woiwodshaft, commonwealth, region, property, county, parish city, domain, tract, arrondissement, mofussil, commune, wappentake, hundred, riding, lathe, garth, soke, tithing, ward, precinct, bailiwick, command, empire, sway, rule, dominion, domination, sovereignty, supremacy, suzerainty, lordship, headship, chiefdom, seigniory, seigniority, rule, sway, command, control, administer, govern, lead, preside over, reign, possess the throne, be seated on the throne, occupy the throne, sway the scepter, wield the scepter, wear the crown, state, realm, body politic, posse comitatus, judicature, cabinet, seat of government, seat of authority, headquarters, accession, installation, politics, reign, regime, dynasty, directorship, dictatorship, protectorate, protectorship, caliphate, pashalic, electorate, presidency, presidentship, administration, proconsul, consulship, prefecture, seneschalship, magistrature, magistracy, monarchy, kinghood, kingship, royalty, regality, aristarchy, aristocracy, oligarchy, democracy, theocracy, demagogy, commonwealth, dominion, heteronomy, republic, republicanism, socialism, collectivism, mob law, mobocracy, ochlocracy, vox populi, imperium in imperio, bureaucracy, beadledom, bumbledom, stratocracy, military power, military government, junta, feodality, feudal system, feudalism, thearchy, theocracy, dinarchy, duarchy, triarchy, heterarchy, duumvirate, triumvirate, autocracy, autonomy, limited monarchy, constitutional government, constitutional monarchy, home rule, representative government, monocracy, pantisocracy, gynarchy, gynocracy, gynaeocracy, petticoat government, legislature, judiciary, administration, office of the president, office of the prime minister, cabinet, senate, house of representatives, parliament, council, courts, supreme court, state, interior, labor, health and human services, defense, education, agriculture, justice, commerce, treasury, Federal Bureau of Investigation, FBI, Central Intelligence Agency, CIA, National Institutes of Health, NIH, Postal Service, Post Office, Federal Aviation Administration, FAA, president, vice president, cabinet member, prime minister, minister, senator, representatative, president pro tem, speaker of the house, department head, section head, section chief, federal judge, justice, justice of the supreme court, chief justice, treasurer, secretary of the treasury, director of the FBI, governor, state cabinet member, state senator, assemblyman, assemblywoman, regal, sovereign, governing, royal, royalist, monarchical, kingly, imperial, imperiatorial, princely, feudal, aristocratic, autocratic, oligarchic, republican, dynastic, ruling, regnant, gubernatorial, imperious, authoritative, executive, administrative, clothed with authority, official, departmental, ex officio, imperative, peremptory, overruling, absolute, hegemonic, hegemonical, authorized, government, public, national, federal, his majesty's, her majesty's, state, county, city, N, a dog's obeyed in office, cada uno tiene su alguazil, le Roi le veut, regibus esse manus en nescio longas, regnant populi, the demigod Authority, the right divine of kings to govern wrong, uneasy lies the head that wears a crown.

N  property, possession, suum cuique, meum et tuum, ownership, proprietorship, lordship, seignority, empire, interest, stake, estate, right, title, claim, demand, holding, tenure, vested interest, contingent interest, beneficial interest, equitable interest, use, trust, benefit, legal estate, equitable estate, seizin, seisin, absolute interest, paramount estate, freehold, fee tail, fee simple, estate in fee, estate in tail, estate tail, estate in tail male, estate in tail female, estate in tail general, limitation, term, lease, settlement, strict settlement, particular estate, estate for life, estate for years, estate pur autre vie, remainder, reversion, expectancy, possibility, dower, dowry, jointure, appanage, inheritance, heritage, patrimony, alimony, legacy, Falcidian law, paternal estate, thirds, assets, belongings, means, resources, circumstances, wealth, money, what one is worth, what one will cut up for, estate and effects, landed property, landed real estate property, realty, land, lands, tenements, hereditaments, corporeal hereditaments, incorporeal hereditaments, acres, ground, acquest, messuage, toft, territory, state, kingdom, principality, realm, empire, protectorate, sphere of influence, manor, honor, domain, demesne, farm, plantation, hacienda, allodium, fief, fieff, feoff, feud, zemindary, dependency, arado, merestead, ranch, free lease-holds, copy lease-holds, folkland, chattels real, fixtures, plant, heirloom, easement, right of common, right of user, personal property, personal estate, personal effects, personalty, chattels, goods, effects, movables, stock, stock in trade, things, traps, rattletraps, paraphernalia, equipage, parcels, appurtenances, impedimenta, luggage, baggage, bag and baggage, pelf, cargo, lading, rent roll, income, maul and wedges, patent, copyright, chose in action, credit, debt, one's own, landed, predial, manorial, allodial, free lease-hold, copy lease-hold, feudal, feodal, to one's credit, to one's account, to the good, to one and his heirs for ever, to one and the heirs of his body, to one and his heirs and assigns, to one and his executors administrators and assign.

animal kingdom, capital of the united kingdom, fungus kingdom, hashemite kingdom of jordan, kingdom animalia, kingdom come, kingdom fungi, kingdom monera, kingdom of belgium, kingdom of bhutan, kingdom of cambodia, kingdom of denmark, kingdom of god, kingdom of lesotho, kingdom of morocco, kingdom of nepal, kingdom of norway, kingdom of saudi arabia, kingdom of spain, kingdom of swaziland, kingdom of sweden, kingdom of thailand, kingdom of the netherlands, kingdom of tonga, kingdom plantae, kingdom prokaryotae, kingdom protoctista, mineral kingdom, plant kingdom, united kingdom, united kingdom of great britain and northern irela, vegetable kingdom