noun pl. cognomens or cognomina
- the third or family name of an ancient Roman (Ex.: Marcus Tullius Cicero)
- any family name; surname; last name
- any name; esp., a nickname
Origin:
L < co-, with + nomen, name: sp. infl. by assoc. with *gnomen < Gr gnōma, mark, token: akin to L gnoscere, know