/ Dictionary / Index E epicyclic train: Meaning and Definition of Find definitions for: ep'icy'clic train' Pronunciation: [key] — Mach. Mach. a train of gears or pulleys in which one or more of the axes revolve about a central axis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. epicycle epicycloid Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language