any of a large family (Vespertilionidae) of long-tailed bats that are widely distributed, esp. in temperate regions, including most of the small, insect-eating species
Origin of vespertilionidfrom Modern Latin Vespertilionidae from Classical Latin vespertilio (gen. vespertilionis), a bat ( from vesper, evening: see vesper) + -id
Any of various widely distributed insect-eating bats of the family Vespertilionidae, characterized by a long tail.
Origin of vespertilionidFrom New Latin Vespertiliōnidae family name from Vespertiliō Vespertiliōn- type genus from Latin vespertiliō bat from vesper evening ; see wes-pero- in Indo-European roots.