Pronunciation: (pā'dā"), [key]
1. the day on which wages are given, payment is made, etc.
2. Informal.a day or period during which a great deal of money, success, fame, etc., is won or obtained: Payday came when she was given a screen test by a big Hollywood studio.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.