Английский словарь Webster - vampire (3)

(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.