Definitions of knock

  1. To strike with something hard or heavy; to drive or be driven against; to clash; to rap. To knock about, to idle about. To knock off, to stop work. To knock under, to yield; to submit; to acknowledge one's self beaten.
  2. To strike; rap, as on a door, for admittance.
  3. 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.
  4. To strike for admittance; to rap upon, as a door.
  5. To impress strongly or forcibly; to astonish; to move to admiration or applause.
  6. To give a blow to; to strike with something hard or heavy; slang, to criticize harshly.
  7. To strike: to drive against.
  8. 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"
  9. To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another.
  10. To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.
  11. To practice evil speaking or fault- finding; to criticize habitually or captiously.
  12. To drive or strike against something.
  13. To strike with something hard or heavy: to drive or be driven against: to strike for admittance: to rap.
  14. To strike; rap.
  15. rap with the knuckles; " knock on the door"
  16. To strike; to drive against; to drive. To knock down, to strike down; to fell. To knock out, to force out by a blow or blows. To knock up, to arouse by knocking; to weary out with excessive toil. To knock off, to force off by beating; to assign to a bidder at an auction by a blow with a hammer; also to knock down. To knock on the head, to stun or kill by a blow or blows; to defeat.
  17. To strike with a noise; to rap; to drive against.
  18. a vigorous blow; " the sudden knock floored him"; " he took a bash right in his face"; " he got a bang on the head"
  19. a bad experience; " the school of hard knocks"
  20. A blow; a stroke with something hard or heavy; a jar.
  21. A stroke, as on a door for admittance; a rap.
  22. A blow or stroke with something hard or heavy; rap.
  23. A sudden stroke: a rap.
  24. A stroke; rap.
  25. Knocker.
  26. A blow; a stroke with something hard or heavy; a stroke on a door for admittance; a rap.
  27. A blow or stroke with something hard or heavy; a stroke on a door; a rap.
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