upper meaning and definition

UPPER noun

Definition of upper (noun)

1. the higher of two berths
   • synonyms: upper berth
2. 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"
3. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
   • synonyms: amphetamine, pep pill, speed

UPPER adjective

Definition of upper (adjective)

1. the topmost one of two
2. higher in place or position
   • "the upper bunk"; "in the upper center of the picture"; "the upper stories"
3. superior in rank or accomplishment
   • "the upper half of the class"