D defs.my
Entry 4 senses Webster, 1913

Christen

/krĭs'-ən/ · Chris·ten · IPA /ˈkɹɪsən/
01 v. t. To baptize and give a Christian name to.
imp. & p. p. Christened; p. pr. & vb. n. Christening
  1. 1.
    To baptize and give a Christian name to.
  2. 2.
    To give a name; to denominate.
  3. 3.
    To Christianize.[Obs.]
  4. 4.
    To use for the first time.[Colloq.]