Definition of lemur
- an arboreal primate with a pointed snout and typically a long tail, found only in Madagascar. Compare with flying lemur.
- Lemuridae and other families, suborder Prosimii; includes also the sifaka, indri, and aye-aye
late 18th century: modern Latin, from Latin lemures (plural) 'spirits of the dead' (from its spectre-like face)