/ Dictionary / Index T track–train dynamics: Meaning and Definition of Find definitions for: track'–train' dynam"ics Pronunciation: (trak'trān'), [key] the interaction between the track and a moving train. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. track system trackwalker Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language