Higher in place, position, or rank: the upper bunk; the upper half of the class.
Situated on higher ground: upper regions.
Lying farther inland: the upper Nile.
Northern: the upper Midwest.
Upper Geology & Archaeology Of, relating to, or being a later division of the period named.
Denoting the smaller and usually less broadly representative house of a bicameral legislature.
The part of a shoe or boot above the sole.
Informal An upper berth.
uppers Informal The upper teeth or a set of upper dentures.
Slang
A drug, especially an amphetamine, used as a stimulant.
An exhilarating or euphoric experience.
(ŭp'ər) 