upper

Adjective

• superior in rank or accomplishment
  • the upper half of the class
    

• higher in place or position
  • the upper bunk
    
  • in the upper center of the picture
    
  • the upper stories
    

• the topmost one of two

Noun

• a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

• 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
    

• the higher of two berths

Related words

• Synonyms: 
  amphetamine , pep pill , speed , upper berth