(idiomatic) Close to death.

Partial or biased in favour of one faction or demographic group. / With one competitor dominant over the other. / Out of proportion or lopsided. / Having only one side, like a Möbius strip.

(idiomatic) Alone; by oneself; without the companionship or assistance of others.

A short joke, especially one of a single sentence. / A short remark intended as a sound bite. / (computing) A command or small program consisting of a single line of input.

(especially in phrases like get one up on someone) An advantage over someone. / (video games) Alternative spelling of 1-up (“extra life”)

(idiomatic) To outdo, to perform something slightly better than a competitor's prior effort.

(idiomatic) The place where one begins; a lack of progress.

(reciprocal pronoun) Used of a reciprocal relationship among a group of two or more people or things; compare each other.

(set phrase) At some unspecified time in the future. / At some unspecified time in the past. / Used other than figuratively or idiomatically: see one, day.

The cardinal number immediately following ninety and preceding ninety-two.