The Collaborative International Dictionary of English v.0.48:
Jument \Ju"ment\, n. [L. jumentum a beast of burden: cf. F. jument a mare, OF., a beast of burden.] A beast; especially, a beast of burden. [Obs.] [1913 Webster] Fitter for juments than men to feed on. --Burton. [1913 Webster]WordNet (r) 3.0 (2006):
jument n 1: an animal such as a donkey or ox or elephant used for transporting loads or doing other heavy work [syn: beast of burden, jument]