(obsolete, slang) First-rate, excellent.

(business, commerce) An individual or entity directly involved in a given transaction, such as a buyer or seller. / (law) The plaintiff in a lawsuit.

plural of first party

Ellipsis of French First Republic. Synonym of France (“1804-1815”)

Synonym of first-degree murder

(law, chiefly US, Canada) The criminal offence of murder in a form considered by law to be the most serious; the precise distinction may vary by jurisdiction but typically involves premeditation, or the choice of victim or other circumstances being regarded as especially blameworthy.

(grammar) The plural of the first-person form of a verb or pronoun, which in some languages can either be inclusive ("you and I") or exclusive ("them and I"). In other languages, there is no distinction.

(grammar) The form of a verb used with the pronoun I (or its equivalent in other languages). / (grammar) The pronoun I (or its equivalent in other languages).

(idiomatic) an instantaneous attraction

(cricket) A three- or five-day cricket match, with two innings per side, played under a set of conditions specified and officially recognised by an official governing body of cricket.