/ Dictionary / Index T terrier: Meaning and Definition of Find definitions for: ter•ri•er Pronunciation: (ter'ē-ur), [key] — n. any of several breeds of usually small dogs, used originally to pursue game and drive it out of its hole or burrow. (cap.)a surface-to-air, two-stage antiaircraft missile. ter•ri•er Pronunciation: (ter'ē-ur), [key] — n. Law. a book or document in which are described the site, boundaries, acreage, tenants, etc., of certain lands. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: terrier (Thesaurus) terricolous terrific Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language