1. [noun] (archaeology) (anthropology) (paleonotology) Any of several extinct anthropoid apes of the genera Australopithecus and Paranthropus
2. [adjective] (archaeology) (anthropology) (paleonotology) Of or pertaining to these animals or their fossils
3. [noun] (anthropology) (paleonotology) Any of several extinct hominid primates, of the genus Australopithecus, from the Pleistocene period. [from 20th c.]
4. [adjective] (archaeology) (anthropology) (paleonotology) Of or pertaining to these creatures
5. [noun] Any of several extinct humanlike bipedal primates with relatively small brains of the genus Australopithecus; from 1 to 4 million years ago.
6. [adjective] Of or belonging to the hominid genus Australopithecus.
