Vampire
n.
Either one of two or more species of South American
blood-sucking bats belonging to the genera Desmodus and Diphylla. These
bats are destitute of molar teeth, but have strong, sharp cutting
incisors with which they make punctured wounds from which they suck the
blood of horses, cattle, and other animals, as well as man, chiefly
during sleep. They have a caecal appendage to the stomach, in which the
blood with which they gorge themselves is stored.