D defs.my
Entry 3 senses · 2 variants Webster, 1913

Birthday

/(bẽrth"dā`)/ · Birth·day · IPA /ˈbɝθˌdeɪ/
01 n. The day in which any person is born; day of origin or commencement.
  1. 1.
    The day in which any person is born; day of origin or commencement.
    “Those barbarous ages past, succeeded next The birthday of invention.” Cowper.
  2. 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.” Shak.
02 a. Of or pertaining to the day of birth, or its anniversary; as, birthday gifts or festivities.
  1. 1.
    Of or pertaining to the day of birth, or its anniversary; as, birthday gifts or festivities.