/ Dictionary / Index T trainmaster: Meaning and Definition of Find definitions for: train•mas•ter Pronunciation: (trān'mas"tur, -mä"stur), [key] — n. a person who has charge of operations over one portion of a railroad. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trainmaster (Thesaurus) trainman train oil Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language