What is the origin of rhubarb?
Rhubarb has a complicated origin. There are several odd Middle English spellings (as one would expect), e.g., reubarb, reubard, reubarbe, etc., from Anglo-French or Middle French reubarbe, rubarbe, reu barbare, all from Late Latin reubarbarum, rheubarbarum. The Latin forms are probably from Greek rhêon bárbaron “foreign rhubarb.” Rhêon is a variant of rhâ “the dried root of rhubarb used as a medicine,” perhaps ultimately related to Persian (an Iranian language) rewend “rhubarb.” Ancient Greek authors also associated rhâ (or Rhâ) with the Scythian (another Iranian language) name for the Volga River. The baseball slang meaning of rhubarb “a loud quarrel on the field, especially between a player and an umpire,” dates from about 1938. Rhubarb entered English in the late 14th century.