adjective, verb, -named, -nam⋅ing.| 1. | of or pertaining to one's first, or given, name; familiar; intimate: They were on a first-name basis soon after meeting. |
| 2. | 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. |
| first name n. A given name or the name that occurs first in a given name. |