'Knock' definitions:

Definition of 'knock'

(from WordNet)
noun
The sound of knocking (as on a door or in an engine or bearing); "the knocking grew louder" [syn: knock, knocking]
noun
Negative criticism [syn: knock, roast]
noun
A vigorous blow; "the sudden knock floored him"; "he took a bash right in his face"; "he got a bang on the head" [syn: knock, bash, bang, smash, belt]
noun
A bad experience; "the school of hard knocks"
noun
The act of hitting vigorously; "he gave the table a whack" [syn: knock, belt, rap, whack, whang]
verb
Deliver a sharp blow or push :"He knocked the glass clear across the room" [syn: knock, strike hard]
verb
Rap with the knuckles; "knock on the door"
verb
Knock against with force or violence; "My car bumped into the tree" [syn: bump, knock]
verb
Make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently" [syn: tap, rap, knock, pink]
verb
Sound like a car engine that is firing too early; "the car pinged when I put in low-octane gasoline"; "The car pinked when the ignition was too far retarded" [syn: pink, ping, knock]
verb
Find fault with; express criticism of; point out real or perceived flaws; "The paper criticized the new movie"; "Don't knock the food--it's free" [syn: knock, criticize, criticise, pick apart] [ant: praise]

Definition of 'Knock'

From: GCIDE
  • Knock \Knock\ (n[o^]k), v. i. [imp. & p. p. Knocked (n[o^]kt); p. pr. & vb. n. Knocking.] [OE. knoken, AS. cnocian, cnucian; prob. of imitative origin; cf. Sw. knacka. Cf. Knack.]
  • 1. To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another. --Bacon. [1913 Webster]
  • 2. To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door. [1913 Webster]
  • For harbor at a thousand doors they knocked. --Dryden. [1913 Webster]
  • Seek, and ye shall find; knock, and it shall be opened unto you. --Matt. vii. 7. [1913 Webster]
  • 3. To practice evil speaking or fault-finding; to criticize habitually or captiously. [Slang, U. S.] [Webster 1913 Suppl.]
  • To knock about, to go about, taking knocks or rough usage; to wander about; to saunter. [Colloq.] "Knocking about town." --W. Irving.
  • To knock up, to fail of strength; to become wearied or worn out, as with labor; to give out. "The horses were beginning to knock up under the fatigue of such severe service." --De Quincey.
  • To knock off, to cease, as from work; to desist.
  • To knock under, to yield; to submit; to acknowledge one's self conquered; -- an expression probably borrowed from the practice of knocking under the table with the knuckles, when conquered. "Colonel Esmond knocked under to his fate." --Thackeray. [1913 Webster]

Definition of 'Knock'

From: GCIDE
  • Knock \Knock\ (n[o^]k), v. t.
  • 1. To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table. [1913 Webster]
  • When heroes knock their knotty heads together. --Rowe. [1913 Webster]
  • 2. To strike for admittance; to rap upon, as a door. [1913 Webster]
  • Master, knock the door hard. --Shak. [1913 Webster]
  • 3. To impress strongly or forcibly; to astonish; to move to admiration or applause. [Slang, Eng.] [Webster 1913 Suppl.]
  • 4. To criticise; to find fault with; to disparage. "Don't knock it if you haven't tried it." [PJC]
  • To knock in the head, or To knock on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash. [Colloq.] -- To knock off. (a) To force off by a blow or by beating. (b) To assign to a bidder at an auction, by a blow on the counter. (c) To leave off (work, etc.). [Colloq.] -- {To knock out}, to force out by a blow or by blows; as, to knock out the brains.
  • To knock up. (a) To arouse by knocking. (b) To beat or tire out; to fatigue till unable to do more; as, the men were entirely knocked up. [Colloq.] "The day being exceedingly hot, the want of food had knocked up my followers." --Petherick. (c) (Bookbinding) To make even at the edges, or to shape into book form, as printed sheets. (d) To make pregnant. Often used in passive, "she got knocked up". [vulgar]

Definition of 'Knock'

From: GCIDE
  • Knock \Knock\, n.
  • 1. A blow; a stroke with something hard or heavy; a jar. [1913 Webster]
  • 2. A stroke, as on a door for admittance; a rap. " A knock at the door." --Longfellow. [1913 Webster]
  • A loud cry or some great knock. --Holland. [1913 Webster]
  • Knock off, See knock off in the vocabulary. [PJC]

Definition of 'knock'

From: GCIDE
  • backfire \backfire\, back fire \back fire\
  • 1. A fire started ahead of a forest or prairie fire to burn only against the wind, so that when the two fires meet both must go out for lack of fuel. [Webster 1913 Suppl.]
  • 2. (a) A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in a direction reverse to that in which it should travel; also called a knock or ping. (b) an explosion in the exhaust passages of an internal combustion engine. [Webster 1913 Suppl. +PJC] Backfire

Definition of 'knock'

From: Easton
  • Knock "Though Orientals are very jealous of their privacy, they never knock when about to enter your room, but walk in without warning or ceremony. It is nearly impossible to teach an Arab servant to knock at your door. They give warning at the outer gate either by calling or knocking. To stand and call is a very common and respectful mode. Thus Moses commanded the holder of a pledge to stand without and call to the owner to come forth (Deut. 24:10). This was to avoid the violent intrusion of cruel creditors. Peter stood knocking at the outer door (Acts 12:13, 16), and the three men sent to Joppa by Cornelius made inquiry and 'stood before the gate' (10:17, 18). The idea is that the guard over your privacy is to be placed at the entrance."
  • Knocking is used as a sign of importunity (Matt. 7:7, 8; Luke 13:25), and of the coming of Christ (Luke 12:36; Rev. 3:20).

Synonyms of 'knock'

From: Moby Thesaurus

Words containing 'Knock'