Alastor
noun
Alas·tor
ə-ˈla-stər,
-ˌstȯr
plural -s
: any of certain avenging deities or spirits especially in Greek antiquity
Word History
Etymology
Greek alastōr, from a- a- entry 2 + -lastōr (probably from lan to look); akin to Sanskrit lasati he shines
First Known Use
1603, in the meaning defined above