Meaning of upper
Definition of upper
(adj)
the topmost one of two
higher in place or position; "the upper bunk"; "in the upper center of the picture"; "the upper stories"
(noun)
the higher of two berths
piece of leather or synthetic material that forms the part of a shoe or boot above the sole that encases the foot; "Uppers come in many styles"
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression