any of numerous small brownish insectivorous bats of the genus Pipistrellus, occurring in most parts of the world: family Vespertilionidae
Word origin
C18: via French from Italian pipistrello, from Latin vespertīliō a bat, from vesper evening, because of its nocturnal habits
pipistrelle in American English
(ˌpɪpɪˈstrɛl) or ˌpipisˈtrel (ˌpɪpɪˈstrɛl)
noun
any of a genus (Pipistrellus) of small bats that characteristically fly early in the evening: found in North America and in most of the Eastern Hemisphere
Word origin
Fr pipistrelle < It pipistrello, altered < OIt vipistrello < L vespertilio, bat < vesper, evening: see vesper