Any of several bats collected or described by Étienne Geoffroy Saint-Hilaire; especially the notch-eared bat, Myotis emarginatus, of southern Europe, North Africa, and south-west Asia.
Origin
Early 19th century.
Definition of Geoffroy's bat in US English:
Geoffroy's bat
noun
Any of several bats collected or described by Étienne Geoffroy Saint-Hilaire; especially the notch-eared bat, Myotis emarginatus, of southern Europe, North Africa, and south-west Asia.