deliver a sharp blow or push :"He knocked the glass clear across the room"
rap with the knuckles
knock against with force or violence
the sound of knocking (as on a door or in an engine or bearing)
negative criticism
make light, repeated taps on a surface
a vigorous blow
the act of hitting vigorously
sound like a car engine that is firing too early
find fault with; express criticism of; point out real or perceived flaws
