• the act of hitting vigorously; "he gave the table a whack"
• negative criticism
• a bad experience; "the school of hard Knocks"
• the sound of Knocking (as on a door or in an engine or bearing); "the Knocking grew louder"
• a vigorous blow; "the sudden Knock floored him"; "he took a bash right in his face"; "he got a bang on the head"
• 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"
• deliver a sharp blow or push :"He Knocked the glass clear across the room"
• Knock against with force or violence; "My car bumped into the tree"
• rap with the knuckles; "Knock on the door"
• 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"
• make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"

'Knock' in other languages