la·mi·a 
(lāmē-ə)
(lāmē-ə)n. pl. la·mi·as or la·mi·ae (-mē-ē′)
1. also Lamia Greek Mythology A monster represented as a serpent with the head and breasts of a woman that ate children and sucked the blood from men.
2. A female vampire.
[Middle English, from Latin, from Greek.]