Slang definitions & phrases for knock someone out
knock someone out
verb phrase - (also knock someone stiff) To make someone unconscious, esp with a blow (1896+)
- To delight or impress someone extremely; kill, KNOCK someone's SOCKS OFF: I read a lot of war books and mysteries and all, but they don't knock me out too much/ He knocked me out. He just killed me! (1942+)