Approval, agreement, or instruction to begin or proceed. / (dated, usually in the plural) A flip-flop (footwear).

(comparable) Progressive; exerting leadership. / (comparable) Dashing; energetic. / (sports, not comparable) Being a score which gives the scoring team or player the lead in the game.

(idiomatic) An active and enterprising person; one who is motivated or inclined to excel; one who strives to achieve success or improvement.

(idiomatic) To become very angry and irrational.

(slang) To become wildly excited or enthusiastic. / (slang) To become very angry.

(intransitive) (of an LP or CD) To sell some specified number of copies (currently 1 million in the US) and be awarded a platinum record.

Used other than figuratively or idiomatically: see let, go.

(baseball, slang) To hit a home run.

Used other than figuratively or idiomatically: see go, over. / (idiomatic) To look at carefully; to scrutinize; to analyze. / (idiomatic) To create a response or impression. / (rugby) To score a try.

(idiomatic, informal) Do not broach that topic.