/ Dictionary / Index T train sickness: Meaning and Definition of Find definitions for: train' sick"ness Pronunciation: [key] nausea and dizziness, sometimes accompanied by vomiting, resulting from the motion of the train in which one is traveling. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trainsick traipse Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language