/ Dictionary / Index T thundershower: Meaning and Definition of Find definitions for: thun•der•show•er Pronunciation: (thun'dur-shou"ur), [key] — n. a shower accompanied by thunder and lightning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thundershower (Thesaurus) thunderpeal thundersquall Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language