/ Dictionary / Index U upper: Meaning and Definition of Find definitions for: up•per Pronunciation: (up'ur), [key] — adj. higher, as in place, position, pitch, or in a scale: the upper stories of a house; the upper register of a singer's voice. superior, as in rank, dignity, or station. (of places) at a higher level, more northerly, or farther from the sea: the upper slopes of a mountain; upper New York State. (often cap.) Stratig. denoting a later division of a period, system, or the like: the Upper Devonian. —n. the part of a shoe or boot above the sole, comprising the quarter, vamp, counter, and lining. an upper berth. a gaiter made of cloth. Cf.(def. 1). Usually, an upper dental plate. an upper tooth. the higher of two bunks or berths. reduced to poverty; without sufficient means: They are on their uppers but manage to hide the fact from their friends. up•per Pronunciation: (up'ur), [key] — n. Slang. a stimulant drug, esp. an amphetamine. a pleasant or elating experience, person, or situation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upper (Thesaurus) up-or-out upper air Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language