Meaning of dress-up

dress-up

Pronunciation: (dres'up"), [key]
— adj.
  1. being an occasion, situation, etc., for which one must be somewhat formally well-dressed: the first dress-up dance of the season.
—n.
  1. Usually, Wear your dress-ups for the reception.
    1. a person's best clothes:Wear your dress-ups for the reception.
    2. accessories or other added features:a car with custom dress-ups.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.