/ Dictionary / Index H headrace: Meaning and Definition of Find definitions for: head•race Pronunciation: (hed'rās"), [key] — n. the race, flume, or channel leading to a water wheel or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: headrace (Thesaurus) headquarters headrail Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language