In the state of being active, functioning or operating. / Performing according to schedule; taking place. / Fitted; covering; being worn.

To an operating state. / So as to cover or be fitted. / Along, forwards (continuing an action). / In continuation, at length. / (obsolete in the US) Later.

Positioned at the upper surface of, touching from above. / Positioned at or resting against the outer surface of; attached to. / Expressing figurative placement or attachment.

(Singapore, Philippines, Malaysia, transitive, colloquial) To switch on.

(UK dialectal, Scotland) Without.

In the Japanese language, a pronunciation, or reading, of a kanji character that was originally based on the character's pronunciation in Chinese, contrasted with kun.

(transitive) To border on.

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.