/ Dictionary / Index T thumbstall: Meaning and Definition of Find definitions for: thumb•stall Pronunciation: (thum'stôl"), [key] — n. a protective sheath of rubber, leather, or the like for the thumb. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thumbstall (Thesaurus) thumbs-down thumb-sucker Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language