any white or light-colored bread made from finely ground, usu. bleached, flour.
white-breadPronunciation: (hwīt'bred", wīt'-), [key]
—adj. Informal (disparaging).
pertaining to or characteristic of the white middle class; bourgeois: white-bread liberals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.