/ Dictionary / Index U upwind: Meaning and Definition of Find definitions for: up•wind Pronunciation: (adv., adj.up'wind'n.up'wind&sec), [key] — adv. toward or against the wind or the direction from which it is blowing: The hunters stalked upwind. —adj. moving or situated toward or in the direction from which the wind is blowing: an upwind leap; the upwind portions of the aircraft. —n. a wind that blows against one's course or up a slope. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upwind (Thesaurus) upwhirl u quark Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language