any of several extinct primates, as a pithecanthropine, with structural characteristics intermediate between ape and man
See ape-man in American Heritage Dictionary 4
(āpˈmănˌ)
noun
Any of various extinct primates, such as pithecanthropus, sometimes considered intermediate in evolution between the anthropoid apes and modern humans. Not in scientific usage.
A person or creature held to combine characteristics of apes and humans, as:
a. A brawny or brutish man.
b. An archetype of the primitive or instinctual aspect of human nature: “The superman has created the airplane and the radio, the ape-man has got hold of them”(Los Angeles Times).