Pronunciation: (hwīt'n-ur, wīt'-), [key]
1. a preparation for making something white, as a bleach, dye, or polish: a bottle of shoe whitener.
2. a person or thing that whitens.
3. a person who applies whitener, as in a manufacturing process.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.