dict-moby-thesaurus binary package in Ubuntu Trusty amd64

 Moby Thesaurus is the largest and most comprehensive thesaurus data
 source in English available for commercial use. This second edition
 has been thoroughly revised adding more than 5,000 root words (to
 total more than 30,000) with an additional _million_ synonyms and
 related terms (to total more than 2.5 _million_ synonyms and related
 terms).
 .
 This is formatted for use by the dictionary server in the dictd
 package.

Source package