Alternative spelling of µs: microsecond

pointless, useless; not worth doing, especially because it is not likely to succeed / (colloquial) No point or advantage.

The quality or degree of being useful.

Third-person singular simple present indicative form of use

(law) A form of equitable ownership peculiar to English law, by which one person enjoys the profits of lands, etc. whose legal title is vested in another in trust.

plural of use

The act of using. / (uncountable) The act of consuming alcohol or narcotics. / (uncountable, followed by "of") Usefulness, benefit. / A function; a purpose for which something may be employed.

(transitive) To employ; to apply; to utilize. / (transitive, often with up) To expend; to consume by employing. / (transitive) To exploit.

Alternative spelling of U.S. of A.

simple past tense and past participle of use / (intransitive, auxiliary, defective, only in past tense/participle) To perform habitually; to be accustomed [to doing something].