/ Dictionary / Index D draft tube: Meaning and Definition of Find definitions for: draft' tube" Pronunciation: [key] the flared passage leading vertically from a water turbine to its tailrace. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. draftsperson drafty Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language