Third-person singular simple present indicative form of knock oneself out

simple past tense and past participle of knock on heaven's door

Third-person singular simple present indicative form of knock on heaven's door

(idiomatic) To die or be close to death.

simple past tense and past participle of knock one out

Third-person singular simple present indicative form of knock one out

present participle of knock one out

(idiomatic) To knock someone down; to hit someone so they fall to the floor.

(idiomatic) To impress greatly; amaze; stun.

(idiomatic, ironic) Don't overexert yourself (in doing something that does not require much effort).