The youngest member of an immediate family. / A member of an immediate family who behaves as, or is treated as though they were the youngest member of a family.

A family unit consisting of a parent or parents and their children.

Alternative spelling of paterfamilias

The state of being extremely friendly; intimacy. / Undue intimacy; inappropriate informality, impertinence. / An instance of familiar behaviour.

Used other than figuratively or idiomatically: see family, jewels. / (idiomatic, euphemistic) Testicles.

Of or pertaining to a human family. / (taxonomy) Pertaining to a taxon at the rank of family. / Of or pertaining to any grouping of things referred to as a family. / (pathology) Inherited.

(sociology) The family in which an individual grows up.

(sociology) A family that is formed when a couple have their first child.

A stepfamily in which both new mates have one or more living children from prior partners.

Birth control, especially when carried out by monogamous heterosexual couples.