/ Dictionary / Index G gravity wind: Meaning and Definition of Find definitions for: grav'ity wind" Pronunciation: (wind), [key] a light wind directed downslope, occurring at night because of the cooling and densification of the air near the ground. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gravity wave gravlax Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language