Sim"pai (?), n.[Malay simpei.] Zool.
A long-tailed monkey (Semnopitchecus melalophus) native of Sumatra. It has a crest of black hair. The forehead and cheeks are fawn color, the upper parts tawny and red, the under parts white. Called also black-crested monkey, and sinpae.
© Webster 1913.