christian name

Short definition from Wiktionary

Noun

1. 1
   Obsolete form of Christian name.
2. 2
   A first name formally given to a child at a Christian baptism.
3. 3
   Any forename.
4. 4
   An English given name, particularly for ethnic Chinese who usually have a separate Chinese name.
5. 5
   A baptismal name or confirmation name used in religious contexts, but not part of the legal name.

Verb

1. 1
   To give (a first name) to (someone).
2. 2
   To address (someone) by first name.