—adj., v., -named, -nam•ing.
of or pertaining to one's first, or given, name; familiar; intimate: They were on a first-name basis soon after meeting.
to address (someone) by his or her first name, esp. as a sign of informality or familiarity: The boss doesn't like the employees to first-name her.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.