A phrase used to reply to a question whose answer the speaker doesn't want to reveal.

A common knot used to tie a necktie.

(idiomatic) To defeat or overcome someone who was in a dominant position.

Alternative form of knock someone's block off

(slang) To strike a person in the head, causing them to fall to the ground, especially in an unconscious condition; to beat up a person.

(of an activity) designed so that participants get to know each other.

(colloquial) You are familiar with the situation I am describing; used to establish common ground with the interlocutor

Alternative form of it takes one to know one

Alternative form of knockout

(transitive, intransitive, rugby) To commit a foul by knocking the ball forward.