/ Dictionary / Index V vitrain: Meaning and Definition of Find definitions for: vit•rain Pronunciation: (vi'trān), [key] — n. the material of which the friable, vitreous layers in banded bituminous coal are composed. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Vitoria vitrectomy Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language