Meaning of JACK in English

I. ˈjak noun

( -s )

Usage: often attributive

Etymology: Middle English jacke, from Jacke, nickname for Johan (John)



(1) capitalized , obsolete : a man of the common people ; also : an impertinent or rude fellow

familiar both with peers and Jacks — British Magazine

(2) sometimes capitalized : a human being : man — used as an intensive in such phrases as every man jack

virtually every man jack — Time

or every jack one

dead, dead every jack one of them — W.S.Maugham

(3) capitalized , slang : pal , buddy , guy — usually used in address

what they get you for, Jack — Thurston Scott

I love it all, Jack — Chandler Brossard


(1) often capitalized : sailor — called also jack-tar

(2) sometimes capitalized : laborer , servant , attendant

(3) : lumberjack

(4) Australia : policeman


(1) : a playing card carrying the figure of a servant or soldier and ranking usually below the queen — called also knave


[by shortening]

: jackpot 1a(4)

(3) : a player's bet in a lottery that he can name all five numbers that will be drawn


a. : a figure usually of a man that strikes the time on a bell especially in a turret clock


(1) : any of various portable hand-operated machines for lifting heavy weights or otherwise exerting great force by utilizing the principle of the lever, screw, toggle joint, or hydraulic press

(2) : a clamp commonly of the screw type for holding work firmly in a desired position (as in a machine)

(3) : a usually triangular wooden brace fastened to the floor by means of a foot iron and a stage screw and hinged to the back of a wall or other scenic unit in a stage set in order to prop it up from behind

c. : a contrivance for turning a spit

d. : an intermediate upright piece of wood at the inner end of each key in any of several keyboard instruments (as a harpsichord or piano) communicating its action to the string by means of a quill, a metal tangent, or a hammer


(1) : a small white target ball at which bowls are rolled in lawn bowling


[probably short for jackstone ]

: a small round stone : pebble ; especially : one used in the game of jacks

(3) : a small six-pointed usually metal object used in the game of jacks

(4) jacks plural but singular in construction : a game played with a set of small objects (as stones, bones, or metal pieces, and often a ball) in which the players toss, catch, and move these objects in a variety of figures requiring coordination of hand and eye


[by shortening]

: jackknife 2

f. : a bat to close a masonry course


(1) dialect England : one fourth of a pint ; also : half-pint


[by shortening]

: applejack

a side of beef and a gallon of jack to wash it down — G.A.Chamberlain

also : brandy

the stuff tasted like raisin jack — Gore Vidal

an extra supply of prune jack — American Guide Series: Pennsylvania


(1) : a lever for depressing the sinkers which push the loops down on the needles in a knitting machine

(2) : a lever that raises a harness especially on dobby looms

(3) : creel 3

(4) : a machine like a fly frame to handle fine cotton roving

i. : a small flag showing nationality flown by a ship usually on a jack staff at the bowsprit cap or at the bow but elsewhere in making certain signals


(1) : a bar of iron athwartships at a topgallant masthead to support a royal mast and spread the royal shrouds

(2) : lazy jack 2

k. : a pan or frame for the fuel of a torch used in hunting or fishing at night ; also : the torch itself : jacklight


(1) : a receptacle with one or more connections to electric circuits arranged for convenient plugging in of connections to other circuits

(2) : a female metallic terminal or junction piece by means of which instruments may be quickly inserted in a line or telephone circuits quickly joined at the central office or exchange

m. : sphalerite

n. slang : money

hadn't that much jack — Nevil Shute

3. : something smaller than the usual or typical of its kind — used in combination

jack rafter

jack shaft


a. : any of several fishes: as

(1) : pike , pickerel ; especially : a young or small pike

(2) : walleyed pike

(3) : a fish of the family Carangidae ; especially : a crevalle ( Caranx hippos )

(4) : a young male fish

a jack salmon

b. : the male of various animals especially of the domestic ass or donkey

c. : any of several birds: as


[by shortening]

: jackdaw


[by shortening]

: jacksnipe

d. : bone spavin


[by shortening]

: jackrabbit

Synonyms: see flag

II. verb

( -ed/-ing/-s )

intransitive verb

1. : to hunt or fish at night with a jacklight ; specifically : to hunt game especially deer illegally at night by shining a spotlight that dazzles and holds immobile

2. slang chiefly Britain : to give up suddenly or readily — used with up

transitive verb

1. : to hunt or fish at night with a jacklight : kill with the aid of a jacklight

a buck that had been jacked on his own land — New York Herald Tribune


a. : to move or lift by or as if by means of a jack — usually used with up

jack up an automobile

jacked up my shorts — Harold Robbins

b. : raise , increase

decided to jack their fees — Wall Street Journal

— usually used with up

stepped in to jack up … the prices he got — F.L.Allen

c. : to raise the level or quality of : bolster — usually used with up

jacking up discipline — R.M.Neal

has ideas about jacking up audiences — New Yorker

this whole business of jacking up the soul — P.G.Wodehouse

d. : to take to task : call to account : reprimand or scold sharply — used with up

jacked up two or three men of the company — R.P.Reeder

3. : to pass (boards) up to a piler on top of a lumber pile

III. noun

( -s )

Etymology: Middle English jakke, from Middle French jaque, jaques — more at jacket

1. : a coarse cheap body garment worn for defense during the medieval period ; especially : one made of leather and sometimes lined with metal

2. : a vessel for holding liquor made originally of waxed leather and coated on the outside with tar or pitch : jug , tankard


variant of jackfruit


variant of jack cheese

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.