[1] : The Collaborative International Dictionary of English v.0.48

harpy \har"py\ haumr"py^, n.; pl. harpies -pi^z. f.
   harpie, l. harpyia, gr. "a`rpyia, from the root of "arpa`zein
   to snatch, to seize. cf. rapacious.
   1. gr. myth. a fabulous winged monster, ravenous and
      filthy, having the face of a woman and the body of a
      vulture, with long claws, and the face pale with hunger.
      some writers mention two, others three.
      1913 webster

            both table and provisions vanished quite.
            with sound of harpies' wings and talons heard.
                                                  --milton.
      1913 webster

   2. one who is rapacious or ravenous; an extortioner.
      1913 webster

            the harpies about all pocket the pool. --goldsmith.
      1913 webster

   3. zool.
      a the european moor buzzard or marsh harrier circus
          aeruginosus.
      b a large and powerful, double-crested, short-winged
          american eagle thrasa"etus harpyia. it ranges
          from texas to brazil.
          1913 webster

   harpy bat zool.
      a an east indian fruit bat of the genus harpyia esp.
          harpyia cephalotes, having prominent, tubular
          nostrils.
      b a small, insectivorous indian bat harpiocephalus
          harpia.

   harpy fly zool., the house fly.
      1913 webster harquebus
see also:
harpies rapacious circus aeruginosus thrasa"etus harpyia harpy bat harpyia 
harpyia cephalotes harpiocephalus harpia harpy fly 

[2] : WordNet (r) 2.0

harpy
     n 1: a malicious fierce-tempered woman syn: vixen, hellcat
     2: greek mythology vicious winged monster; often depicted as
        a bird with the head of a woman
     3: any of various fruit bats of the genus nyctimene
        distinguished by nostrils drawn out into diverging tubes
        syn: harpy bat, tube-nosed bat, tube-nosed fruit bat
     4: large black-and-white crested eagle of tropical america
        syn: harpy eagle, harpia harpyja
see also:
vixen hellcat harpy bat tube-nosed bat tube-nosed fruit bat harpy eagle 
harpia harpyja 

[3] : Moby Thesaurus II by Grady Ward, 1.0

61 moby thesaurus words for "harpy":
   argus, briareus, cerberus, charybdis, cyclops, echidna, gorgon,
   harpy, hydra, loch ness monster, medusa, minotaur, pegasus, python,
   scylla, sphinx, talos, typhon, xanthippe, amazon, blackmailer,
   bloodsucker, centaur, chimera, cockatrice, dragon, drake,
   extortionist, fishwife, griffin, hippocampus, leech, mermaid,
   merman, nixie, ogre, ogress, predator, profiteer, racketeer,
   raptor, roc, salamander, satyr, scold, sea horse, sea serpent,
   shakedown artist, shark, shrew, siren, termagant, troll, unicorn,
   vampire, vixen, vulture, werewolf, windigo, xiphopagus, zombie

Harpy >> H Words
Harpy, definition of term: Harpy
harpy_pag1.html

Harpy Eagle >> H Words
Harpy Eagle, definition of term: Harpy Eagle
harpy+eagle_pag1.html