Pronunciation: (un-mask', -mäsk'), [key]
1. to strip a mask or disguise from.
2. to reveal the true character of; disclose; expose.
3. Mil.to reveal the presence of (guns) by firing.
to put off one's mask; appear in true nature.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.