(rare) plural of first base

(US, military, informal) A first-class cadet. / (informal, by extension) Someone who does something for the first time; a debutant / (informal) Someone who is in the first year, or round, of something

(obsolete) Earlier, former.

(in combination) A person who advocates the primacy of the named entity (who puts it first).

(law) The most severe level of felony, typically involving planning or other aggravating factors.

The family of the President of the United States. / (by extension) The immediate family of a political chief executive.

(anthropology) The first meeting between people of two previously unknown cultures. / (science fiction) The first meeting between humans and extraterrestrials.

plural of first-person singular

plural of first-person plural

Alternative spelling of first light