birthnight: Meaning and Definition of

birth•night

Pronunciation: (bûrth'nīt"), [key]
— n.
  1. the night of a person's birth, esp. a birthday celebration for royalty.
  2. the anniversary of such a date.
  3. the celebration of a royal birthday.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.