(basketball) A double foul shot, where the first shot must succeed in order to get the second shot.

plural of one-on-one

plural of one-to-one

plural of one and one

(slang, MLE) on one's own

Synonym of nobody's fool

plural of no one's fool

The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number. / (number theory) The first positive number in the set of natural numbers.

(impersonal pronoun, indefinite) One thing (among a group of others); one member of a group.

The digit or figure 1. / (mathematics) The neutral element with respect to multiplication in a ring. / (US) A one-dollar bill. / One o'clock, either a.m. or p.m.