(programming, languages) An entity that can be constructed at run-time, passed as a parameter, returned from a function, or assigned into a variable.

(programming, languages) Synonym of first-class object

plural of right of first refusal

plural of first-degree murder

(Australia) Those who arrive or get in sooner will receive a more desirable outcome.

A blood relative who shares roughly half a person's DNA, such as a parent, full sibling, or child.

plural of first-degree relative

The original period of concerted feminist activity during the 19th and early 20th century, focusing on de jure gender inequalities, primarily that of suffrage (the right to vote).

(idiomatic, intransitive) To play a leading role.

(idiomatic) To get as far as the first phase or milestone of a goal. / (idiomatic) To get as far as kissing in sexual advances.