Gib'bon, n.

noun

n. (Zoöl.) An animal of the genus Hylobates (H. lar), a kind of ape remarkable for the length of its arms, which, when the animal is standing, reach to the ankle joints. It is of a black color, with the exception of the hands and feet and a circle around the face, which are white;—called also hylobate. Baird.

An engraved gibbon sits on a branch with one arm raised to grasp another branch.
Gibbon.