/ Dictionary / Index T thick-skulled: Meaning and Definition of Find definitions for: thick-skulled Pronunciation: (thik'skuld'), [key] — adj. stupid; dull. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thick-skulled (Thesaurus) thick-skinned thick-tailed ray Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language