1.  squad(n = noun.group) - a smallest army unit;
is a kind of army unit
has particulars: firing party, firing squad

2.  squad(n = noun.group) team - a cooperative unit (especially in sports);
is a kind of social unit, unit
has parts: bench
has particulars: a-team, battery, flying squad, major-league club, major-league team, minor-league club, minor-league team, baseball team, basketball team, five, eleven, football team, hockey team, junior varsity, jv, first team, varsity, second string, police squad, squad, powerhouse, offence, offense, defence, defending team, defense, hit squad, section, little-league team, crew

3.  squad(n = noun.group) police squad - a small squad of policemen trained to deal with a particular kind of crime;
is a kind of squad, team
has particulars: vice squad, platoon, special weapons and tactics squad, special weapons and tactics team, swat squad, swat team

1.  A small party of men assembled for drill, inspection, or other purposes. [1913 Webster]

2.  Hence, any small party. [1913 Webster]

   Sloppy mud. Tennyson. [1913 Webster]

squad, n.
1 a small group of people sharing a task etc.
2 Mil. a small number of men assembled for drill etc.
3 Sport a group of players forming a team.
4 a (often in comb.) a specialized unit within a police force (drug squad). b = flying squad.
5 a group or class of people of a specified kind (the awkward squad).

Idiom:
squad car a police car having a radio link with headquarters.

Etymology:
F escouade var. of escadre f. It. squadra SQUARE

N  assemblage, collection, collocation, colligation, compilation, levy, gathering, ingathering, muster, attroupement, team, concourse, conflux, congregation, contesseration, convergence, meeting, levee, reunion, drawing room, at home, conversazione, assembly, congress, convention, conventicle, gemote, conclave, posse, posse comitatus, Noah's ark, miscellany, collectanea, museum, menagerie, museology, crowd, throng, group, flood, rush, deluge, rabble, mob, press, crush, cohue, horde, body, tribe, crew, gang, knot, squad, band, party, swarm, shoal, school, covey, flock, herd, drove, atajo, bunch, drive, force, mulada, remuda, roundup, array, bevy, galaxy, corps, company, troop, troupe, task force, army, regiment, host, populousness, clan, brotherhood, fraternity, sorority, association, volley, shower, storm, cloud, group, cluster, Pleiades, clump, pencil, set, batch, lot, pack, budget, assortment, bunch, parcel, packet, package, bundle, fascine, fasces, bale, seron, seroon, fagot, wisp, truss, tuft, shock, rick, fardel, stack, sheaf, haycock, fascicle, fascicule, fasciculus, gavel, hattock, stook, accumulation, congeries, heap, lump, pile, rouleau, tissue, mass, pyramid, bing, drift, snowball, snowdrift, acervation, cumulation, glomeration, agglomeration, conglobation, conglomeration, conglomerate, coacervate, coacervation, coagmentation, aggregation, concentration, congestion, omnium gaterum, spicilegium, black hole of Calcutta, quantity, collector, gatherer, whip, whipper in, assembled, closely packed, dense, serried, crowded to suffocation, teeming, swarming, populous, as thick as hops, all of a heap, fasciculated cumulative, the plot thickens, acervatim, tibi seris tibi metis.

N  combatant, disputant, controversialist, polemic, litigant, belligerent, competitor, rival, corrival, fighter, assailant, champion, Paladin, mosstrooper, swashbuckler fire eater, duelist, bully, bludgeon man, rough, prize fighter, pugilist, boxer, bruiser, the fancy, gladiator, athlete, wrestler, fighting-cock, game-cock, warrior, soldier, fighting man, Amazon, man at arms, armigerent, campaigner, veteran, swordsman, sabreur, redcoat, military man, Rajput, armed force, troops, soldiery, military forces, sabaoth, the army, standing army, regulars, the line, troops of the line, militia, yeomanry, volunteers, trainband, fencible, auxiliary, bersagliere, brave, garde-nationale, garde-royale, minuteman, auxiliary forces, reserve forces, reserves, posse comitatus, national guard, gendarme, beefeater, guards, guardsman, yeomen of the guard, life guards, household troops, janissary, myrmidon, Mama, Mameluke, spahee, spahi, Cossack, Croat, Pandoz, irregular, guerilla, partisan, condottiere, franctireur, tirailleur, bashi-bazouk, vietminh, vietcong, shining path, contras, huk, hukbalahap, mercenary, soldier of fortune, hired gun, gunfighter, gunslinger, bushwhacker, free lance, companion, Hessian, hit man torpedo, soldier, levy, draught, Landwehr, Landsturm, conscript, recruit, cadet, raw levies, infantry, infantryman, private, private soldier, foot soldier, Tommy Atkins, rank and file, peon, trooper, sepoy, legionnaire, legionary, cannon fodder, food for powder, officer, subaltern, ensign, standard bearer, spearman, pikeman, spear bearer, halberdier, lancer, musketeer, carabineer, rifleman, jager, sharpshooter, yager, skirmisher, grenadier, fusileer, archer, bowman, horse and foot, horse soldier, cavalry, horse, artillery, horse artillery, light horse, voltigeur, uhlan, mounted rifles, dragoon, hussar, light dragoon, heavy dragoon, heavy, cuirassier, Foot Guards, Horse Guards, gunner, cannoneer, bombardier, artilleryman, matross, sapper, sapper and miner, engineer, light infantry, rifles, chasseur, zouave, military train, coolie, army, corps d'armee, host, division, battalia, column, wing, detachment, garrison, flying column, brigade, regiment, corps, battalion, sotnia, squadron, company, platoon, battery, subdivision, section, squad, piquet, picket, guard, rank, file, legion, phalanx, cohort, cloud of skirmishers, war horse, charger, destrier, marine, man-of-war's man, navy, wooden walls, naval forces, fleet, flotilla, armada, squadron, man-of-war, destroyer, submarine, minesweeper, torpedo-boat, torpedo-destroyer, patrol torpedo boat, PT boat, torpedo- catcher, war castle, H, M, S, battleship, battle wagon, dreadnought, line of battle ship, ship of the line, aircraft carrier, carrier, flattop, helicopter carrier, missile platform, missile boat, ironclad, turret ship, ram, monitor, floating battery, first- rate, frigate, sloop of war, corvette, gunboat, bomb vessel, flagship, guard ship, cruiser, armored cruiser, protected cruiser, privateer, tender, store ship, troop ship, transport, catamaran, merchant marine.

awkward squad, death squad, firing squad, flying squad, hit squad, police squad, special weapons and tactics squad, squad car, squad room, swat squad, vice squad