Dictionary
cog•no•men
Pronunciation: (kog-nō'mun), [key]—
n.,
—pl. -no•mens, -nom•i•naPronunciation: (-nom'u-nu). [key]
1. a surname.
2. any name, esp. a nickname.
3. the third and commonly the last name of a citizen of ancient Rome, indicating the person's house or family, as “Caesar” in “Gaius Julius Caesar.” Cf.
agnomen (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.