Merriam-Webster's Collegiate® Dictionary, 11th Edition
UPRIGHT
I. adjective Date: before 12th century
1. perpendicular , vertical , erect in carriage or posture, having the main axis or a main part perpendicular , marked by strong moral rectitude , uprightly adverb uprightness noun Synonyms: see: upright
II. adverb
Date: 12th century
vertically upward ; in an upright position,
III. noun
Date: 1683
the state of being upright ; perpendicular , something that stands upright, upright piano