(1):
(n.) The name received at baptism; or, more generally, any name or appelation.
(2):
(n.) The profession of faith in Christ by baptism; hence, the Christian religion, or the adoption of it.
(3):
(n.) The whole body of Christians.
(4):
(n.) That portion of the world in which Christianity prevails, or which is governed under Christian institutions, in distinction from heathen or Mohammedan lands.