- vampire
- vampire: [18] Vampire probably goes back ultimately to ubyr, a word for ‘witch’ in the Kazan Tatar language of an area to the east of Moscow. This was borrowed into Russian as upyr’, and from there probably found its way into Hungarian as vampir. English acquired it via French vampire or German vampir. The application of the word to a type of bloodsucking bat was introduced by the 18th-century French biologist Buffon.
- leech (n.1)
- "bloodsucking aquatic worm," from Old English læce (Kentish lyce), of unknown origin (with a cognate in Middle Dutch lake). Commonly regarded as a transferred use of leech (n.2), but the Old English forms suggest a distinct word, which has been assimilated to leech (n.2) by folk etymology [see OED]. Figuratively applied to human parasites since 1784.