siamang

[ see-uh-mang ]
/ ˈsi əˌmæŋ /

noun

a large, black gibbon, Hylobates syndactylus, of Sumatra and the Malay Peninsula, having very long arms and the second and third digits partially united by a web of skin: an endangered species.

Origin of siamang

Borrowed into English from Malay around 1815–25
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British Dictionary definitions for siamang

siamang
/ (ˈsaɪəˌmæŋ) /

noun

a large black gibbon, Hylobates (or Symphalangus) syndactylus, of Sumatra and the Malay Peninsula, having a large reddish-brown vocal sac beneath the chin and the second and third toes united

Word Origin for siamang

C19: from Malay
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012