Definition of apeman:
(n) :
A prehistoric man resembling an ape, especially one held to be a precursor to modern humans; a non-human australopithecine.
(n) :
A human raised from childhood by apes (generally in reference to, or in imitation of, the fictional character Tarzan).
(n) :
(cryptozoology) A reputed or legendary, large, bipedal, ape-like creature, as Bigfoot or the Yeti, or a primitive australopithecine still extant today.