The Collaborative International Dictionary
Wou-wou
Wou-wou \Wou"-wou`\, n. [So called from its cry.] (Zo["o]l.) The agile, or silvery, gibbon; -- called also camper. See Gibbon. [Written also wow-wow.]
Wiktionary
wou-wou
n. The agile, or silvery, gibbon.