knock
noun.
the sound of knocking (as on a door or in an engine or bearing)
the knocking grew louder
Synonym: knocking
noun.
negative criticism
Synonym: 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
Synonym: bang, bash, belt, smash
noun.
a bad experience
the school of hard knocks
noun.
the act of hitting vigorously
he gave the table a whack
Synonym: belt, rap, whack, whang
verb.
deliver a sharp blow or push
He knocked the glass clear across the room
Synonym: strike hard
verb.
rap with the knuckles
knock on the door
verb.
knock against with force or violence
My car bumped into the tree
Synonym: bump
verb.
make light, repeated taps on a surface
he was tapping his fingers on the table impatiently
Synonym: pink, rap, tap
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
Synonym: ping, pink
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