big gun(n = noun.person) big cheese, big deal, big enchilada, big fish, big shot, big wheel, head honcho - an important influential person; "he thinks he's a big shot"; "she's a big deal in local politics"; "the Qaeda commander is a very big fish"
is a kind of important person, influential person, personage
has particulars: knocker, supremo

N  nobility, rank, condition, distinction, optimacy, blood, pur sang, birth, high descent, order, quality, gentility, blue blood of Castile, ancien regime, high life, haute monde, upper classes, upper ten thousand, the four hundred, elite, aristocracy, great folks, fashionable world, peer, peerage, house of lords, house of peers, lords, lords temporal and spiritual, noblesse, noble, nobleman, lord, lordling, grandee, magnifico, hidalgo, daimio, daimyo, samurai, shizoku, don, donship, aristocrat, swell, three- tailed bashaw, gentleman, squire, squireen, patrician, laureate, gentry, gentlefolk, squirarchy, better sort magnates, primates, optimates, pantisocracy, king, atheling, prince, duke, marquis, marquisate, earl, viscount, baron, thane, banneret, baronet, baronetcy, knight, knighthood, count, armiger, laird, signior, seignior, esquire, boyar, margrave, vavasour, emir, ameer, scherif, sharif, effendi, wali, sahib, chevalier, maharaja, nawab, palsgrave, pasha, rajah, waldgrave, princess, begum, duchess, marchioness, countess, lady, dame, memsahib, Do$a, maharani, rani, personage of distinction, man of distinction, personage of rank, man of rank, personage of mark, man of mark, notables, notabilities, celebrity, bigwig, magnate, great man, star, superstar, big bug, big gun, great gun, gilded rooster, magni nominis umbra, every inch a king, noble, exalted, of rank, princely, titled, patrician, aristocratic, high-, well-born, of gentle blood, genteel, comme il faut, gentlemanlike, courtly, highly respectable, in high quarters, Adel sitzt im Gemuthe nicht im Gebluete, adelig und edel sind zweierlei, noblesse oblige.

ack-ack gun, air gun, antiaircraft gun, assault gun, bb gun, big, big apple, big band, big bang, big bang theory, big bedbug, big ben, big bend, big bend national park, big bend state, big bill haywood, big bill tilden, big blue, big board, big brother, big brown bat, big bucks, big business, big businessman, big cat, big cheese, big deal, big dipper, big enchilada, big fish, big game, big h, big hand, big league, big leaguer, big marigold, big money, big mouth, big name, big sagebrush, big science, big shagbark, big shellbark, big shellbark hickory, big shot, big sioux river, big sister, big spender, big stick, big sur, big talk, big talker, big time, big time operator, big toe, big top, big tree, big wheel, bofors gun, bren gun, browning machine gun, burp gun, electron gun, field gun, gas gun, gatling gun, go over big, grease gun, gun, gun barrel, gun carriage, gun case, gun chamber, gun control, gun deck, gun dog, gun down, gun emplacement, gun enclosure, gun for, gun for hire, gun moll, gun muzzle, gun rest, gun room, gun smoke, gun trigger, gun turret, harpoon gun, high-angle gun, hired gun, hotchkiss gun, hydropneumatic gun carriage, in a big way, jump the gun, krupp gun, light machine gun, machine gun, maxim gun, minute gun, naval gun, paintball gun, quaker gun, riot gun, set gun, smoking gun, spray gun, spring gun, squirt gun, staple gun, sten gun, stun gun, submachine gun, talk big, thompson submachine gun, tommy gun, too big for one's breeches, vickers' gun, vickers-maxim automatic machine gun, vickers-maxim gun, water gun, whaling gun, whitworth gun, wire gun, wire-wound gun, zip gun