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The definition of knock

17 Definitions of: knock

    1. verb, to give a blow or push to; strike
    2. verb, to rap sharply with the knuckles, a hard object, etc, esp to capture attention
    3. verb, to make or force by striking
    4. verb, to collide (with)
    5. verb, to bring into a certain condition by hitting or pushing
    6. verb, to criticize adversely; belittle
    7. verb, Also: pink (of an internal-combustion engine) to emit a characteristic metallic noise as a result of faulty combustion
    8. verb, (of a bearing, esp one in an engine) to emit a regular characteristic sound as a result of wear
    9. verb, slang to have sexual intercourse with (a person)
    10. verb, knock (a person) into the middle of next week to hit (a person) with a very heavy blow
    11. verb, knock one's head against to have a violent or unpleasant encounter with (adverse facts or circumstances)
    12. verb, knock on the head a) to daze or kill (a person) by striking on the head b) effectively to prevent the further development of (a plan)
    13. noun, a) a blow, push, or rap b) the sound so caused
    14. noun, the sound of knocking in an engine or bearing
    15. noun, a misfortune, rebuff, or setback
    16. noun, unfavourable criticism
    17. noun, (in cricket) an innings or a spell of batting ▷ See also knock about ▷ See also, knock back ▷ See also, knock down ▷ See also, knock off ▷ See also, knock-on ▷ See also, knockout ▷ See also, knock up
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    19. Show me the etymology of the word: knock
Synonyms: travel, beat, Informal disparage, knock, pound, beating, tap, hammy, bang, rap And more...
 

From Collins

©HarperCollins 2008. Collins English Dictionary definition of knock