(Britain) A secondary, often unintended effect; a repercussion, chain reaction.

(transitive, originally US, colloquial, dated) To beat up or seriously injure (a person); to badly damage (a thing).

Synonym of beat the daylights out of

(transitive, intransitive) To accustom (a person) to the vicissitudes of life; to cure a person of naïveté, selfishness, etc. by exposure to reality.

simple past tense and past participle of knock down to size

present participle of knock down to size

past tense of knock someone over with a feather / past participle of knock someone over with a feather

(idiomatic, informal, hyperbolic) Surprised

(slang, obsolete) The game of skittles.

(informal, idiomatic) To cause (someone, a team) to lose energy and confidence.