| vespertilio | (n) a genus of Vespertilionidae, Syn. genus Vespertilio |
| vespertilionidae | (n) the majority of common bats of temperate regions of the world, Syn. family Vespertilionidae |
| Vespertilio | ‖n. [ L., a bat. ] (Zool.) A genus of bats including some of the common small insectivorous species of North America and Europe. [ 1913 Webster ] |
| Vespertiliones | n. pl. [ NL. ] (Zool.) A tribe of bats including the common insectivorous bats of America and Europe, belonging to |
| Vespertilionine | a. (Zool.) Of or pertaining to the Vespertiliones. [ 1913 Webster ] |