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Dictionary definition for: Knock

1. (n) the sound of knocking (as on a door or in an engine or bearing) "the knocking grew louder"

2. (v) deliver a sharp blow or push :"He knocked the glass clear across the room"

3. (n) negative criticism

4. (v) rap with the knuckles; "knock on the door"

5. (n) a vigorous blow; "the sudden knock floored him" "he took a bash right in his face" "he got a bang on the head"

6. (v) knock against with force or violence; "My car bumped into the tree"

7. (n) a bad experience; "the school of hard knocks"

8. (v) make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"

9. (n) the act of hitting vigorously; "he gave the table a whack"

10. (v) 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"

11. (v) 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"

WordNet 2.1 Copyright Princeton University. All rights reserved.