say it: UHP-ur
upper is a noun and adjective meaning "the higher of two berths". It carries 6 recorded senses.
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
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for upper come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.