(Zoology)a bat of a large family (Vespertilionidae) that includes most of the typical insectivorous bats of northern temperate regions (动)蝙蝠(蝙蝠科,包括北温带主要食虫蝙蝠)
语源
late 19th cent.: from modern Latin Vespertilionidae (plural), from Latin vespertilio 'bat'