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 vespertilionid; from 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 Vespertili&omacron;nidae, family name, from Vespertili&omacron;, Vespertili&omacron;n-, type genus, from Latin vespertili&omacron;, bat, from vesper, evening; see wes-pero- in Indo-European roots.