gnu collaborative international dictionary of english
The GNU Collaborative International Dictionary of English, or GCIDE for short, is a free dictionary derived from Webster's Revised Unabridged Dictionary, published 1913, and supplemented with some new definitions, in particular from WordNet. The dictionary is created by Patrick J. Cassidy, and proof-read and supplemented by volunteers from around the world.
Homepage: http://gcide.gnu.org.ua/
Maintainer: Anthony J. Bentley <anthony@anjbe.name>