knock

v. tap; strike; bump; criticize (Slang); stun (Slang)

n. tap; strike; criticism (Slang)

Places Knock is a place-name found in a number of countries.
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Noun
1. the sound of knocking (as on a door or in an engine or bearing); "the knocking grew louder"
(synonym) knocking
(hypernym) sound
(derivation) pink, ping
2. negative criticism
(synonym) roast
(hypernym) criticism, critique
3. a vigorous blow; "the sudden knock floored him"; "he took a bash right in his face"; "he got a bang on the head"
(synonym) bash, bang, smash, belt
(hypernym) bump, blow
(derivation) strike hard
4. a bad experience; "the school of hard knocks"
(hypernym) misfortune, bad luck
5. the act of hitting vigorously; "he gave the table a whack"
(synonym) belt, rap, whack, whang
(hypernym) blow
(derivation) strike hard
Verb
1. deliver a sharp blow or push :"He knocked the glass clear across the room"
(synonym) strike hard
(hypernym) strike
(see-also) overturn, tip over, turn over, upset, knock over, bowl over, tump over
(derivation) belt, rap, whack, whang
2. rap with the knuckles; "knock on the door"
(hypernym) rap, knap
(derivation) knocking
3. knock against with force or violence; "My car bumped into the tree"
(synonym) bump
(hypernym) hit, strike, impinge on, run into, collide with
(see-also) run into, bump into, jar against, butt against, knock against
4. make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"
(synonym) tap, rap, pink
(hypernym) sound, go
(derivation) knocking
5. 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"
(synonym) pink, ping
(hypernym) sound, go
(derivation) knocking
6. 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"
(synonym) criticize, criticise, pick apart
(hypernym) comment, notice, remark, point out
(hyponym) reprimand, censure, criminate
(entail) judge

(v. t.)
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.
  

(v. t.)
To strike for admittance; to rap upon, as a door.
  

(v. i.)
To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.
  

(v. i.)
To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another.
  

(n.)
A stroke, as on a door for admittance; a rap.
  

(n.)
A blow; a stroke with something hard or heavy; a jar.
  

"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).