(idiomatic, vulgar, of a man) To ejaculate while wearing one's trousers. / (idiomatic, vulgar, by extension) To experience an orgasm while clothed; to be thoroughly excited or delighted.

To attest to the truthfulness of the accompanying statement. / Used other than figuratively or idiomatically: see cross, one's, heart.

The obscene gesture made by holding only the middle finger of a hand erect while the rest of the fingers are in a fist.

(rare) To give a one-finger salute.

plural of one-finger salute

Alternative spelling of one-hit wonder

(idiomatic) To fail, especially in a dramatic or particularly decisive manner.

(idiomatic) A difficult challenge for the person indicated, especially one involving a competitive situation.

(computing, slang) A problem that should be easily resolved.

Taking as much time as one requires; when one is ready.