Pronunciation: (eks lē'bris, lī'-), [key]
—pl. -bris for 2.
1. from the library of (a phrase inscribed in or on a book before the name of the owner): Ex libris Jane Doe.
2. an inscription in or on a book, to indicate the owner; bookplate.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.