/ Dictionary / Index S straightjacket: Meaning and Definition of Find definitions for: straight•jack•et Pronunciation: (strāt'jak"it), [key] — n., v.t. straitjacket. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: straightjacket (Thesaurus) straight-from-the-shoulder straight-laced Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language