- The nickname of a partial female skeleton of a fossil hominid found in Ethiopia in 1974, about 3.2 million years old and 3 feet 8 inches (1.1 m) in height.
- Australopithecus afarensis, family Hominidae. This species is regarded by many as the ancestor of all subsequent Australopithecus and Homo species
More definitions of LucyDefinition of Lucy in:
- The British & World English dictionary