/ Dictionary / Index J jail: Meaning and Definition of Find definitions for: jail Pronunciation: ( jāl), [key] — n. a prison, esp. one for the detention of persons awaiting trial or convicted of minor offenses. —v.t. to take into or hold in lawful custody; imprison. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jail (Thesaurus) jai alai jailbait Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language