/ Dictionary / Index J Jain: Meaning and Definition of Find definitions for: Jain Pronunciation: ( jīn), [key] — n. an adherent of Jainism. —adj. of or pertaining to the Jains or Jainism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jain (Thesaurus) jailhouse lawyer Jainism Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language