Birthday /(bẽrth"dā`)/

Birth·day

Birthday

n.
  1. The day in which any person is born; day of origin or commencement.
    Those barbarous ages past, succeeded next The birthday of invention.
  2. The day of the month in which a person was born, in whatever succeeding year it may recur; the anniversary of one's birth.
    This is my birthday; as this very day Was Cassius born.

Birthday

a.
  1. Of or pertaining to the day of birth, or its anniversary; as, birthday gifts or festivities.