• Verb (used without object)

    to strike a sounding blow with the fist, knuckles, or anything hard, esp. on a door, window, or the like, as in seeking admittance, calling attention, or giving a signal
    to knock on the door before entering.
    to strike in collision; bump
    He knocked into a table.
    to make a pounding noise
    The engine of our car is knocking badly.
    Informal . to engage in trivial or carping criticism; find fault.
    Cards . to end a game, as in gin rummy, by laying down a hand in which those cards not included in sets total less than a specific amount.

    Verb (used with object)

    to give a sounding or forcible blow to; hit; strike; beat.
    to drive, force, or render by a blow or blows
    to knock a man senseless.
    to make by striking a blow or blows
    to knock a hole in the wall.
    to strike (a thing) against something else.
    Informal . to criticize, esp. in a carping manner
    He's always knocking everything.
    British Slang . to astound; impress greatly.

    Noun

    an act or instance of knocking.
    the sound of knocking, esp. a rap, as at a door.
    a blow or thump.
    Informal . an adverse criticism.
    the noise resulting from faulty combustion or from incorrect functioning of some part of an internal-combustion engine.
    Cricket . an innings.
    British Slang .
    one of a combination of dealers who bid together, rather than against each other, at an auction, and later resell the purchases among themselves.
    an auction at which this is done.
    the sale of merchandise recently obtained by a dealer at an auction. ?

    Verb phrases

    knock around or about, Informal .
    to wander aimlessly or idly; loaf.
    to mistreat (someone), esp. physically.
    to jar; shake up.
    knock back, Slang . to drink (a beverage), esp. quickly and heartily
    He knocked back two shots of vodka.
    knock down,
    to sell at auction by a blow of the hammer or to a bidder.
    to take apart or disassemble, as for facility in handling, storing, shipping, etc.
    Slang . to receive, as a salary or a scholastic grade; earn
    He knocks down 30 grand a year.
    Informal . to lower the price of; reduce
    to knock down end-of-season leftovers.
    Slang . to embezzle or steal (money).
    to cause (a sailing vessel) to heel, as by a gust of wind, to such a degree that it cannot right itself.
    knock off,
    Informal . to cease activity, esp. work
    to knock off at five every day.
    to stop doing something; quit
    Knock it off or you'll get into a mess.
    Slang . to dispose of; finish.
    Slang . to murder; kill.
    Slang . to die.
    Slang . to get rid of; reduce.
    Slang . to disable or defeat.
    Slang . to commit a robbery at; steal from
    The gang knocked off a gas station.
    Nautical Slang . to blow the head (of a sailing vessel) off the wind.
    to imitate, copy, or plagiarize
    to knock off designer dresses in cheap materials.
    knock out,
    to defeat (an opponent) in a boxing match by striking such a blow that the opponent is unable to rise within the specified time.
    to render (a person) unconscious
    Those sleeping pills knocked me out for ten hours.
    to make tired or exhausted
    Christmas shopping always knocks me out.
    Informal . to produce quickly, hurriedly, or with ease
    He knocks out two poems a day.
    to damage or destroy
    The explosion knocked out the power for several hours.
    knock ( def. 28 ) .
    knock over,
    to strike (someone or something) from an erect to a prone position
    to knock over a lamp.
    to distress; overcome
    When the announcement came we were completely knocked over.
    Slang . to rob, burglarize, or hijack
    He knocked over five banks.
    knock together, to make or construct in a hurry or with little attention to detail
    He knocked together a couple of tables.
    knock up,
    Slang . to make pregnant.
    to exhaust; weary; tire.
    to damage; mar
    The children knocked up the new table.
    to injure; wound
    He was afraid to come home from school all knocked up again.
    British . to wake up; rouse; call
    He knocked us up before dawn.

    Idioms

    have it knocked
    Slang . to be assured of success
    With a government job, he thought he had it knocked.
    knock out of the box, Baseball . to cause a pitcher to be removed from the box because the pitcher has permitted too many hits to be made. Also
    knock out.
    knock the or one's socks off
    Informal . to have an overwhelming effect on
    The song knocked the socks off the audience.

    Synonyms

    tác giả


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