pig-tailed macaque Syllabification: (pig-tailed ma·caque)Entry from US Dictionary (also pigtail macaque)Definition of pig-tailed macaque noun a forest-dwelling Southeast Asian macaque that has a brown coat with pale underparts, dark markings around the face, and a small piglike tail. Macaca nemestrina, family Cercopithecidae pig-tailed macaque in other Oxford dictionaries Definition of pig-tailed macaque in the US English dictionary