Word Study
leprechaun
CIDE DICTIONARY
leprechaun, n.
A small mischevous elf or spirit in Irish folklore; it is often depicted in literature as a dwarfish bearded old man; -- legend tells that if a leprechaun is captured, he will reveal the location of his hidden pot of gold. [WordNet 1.5]
OXFORD DICTIONARY
leprechaun, n. a small mischievous sprite in Irish folklore.
Etymology
OIr. luchorp{aacute}n f. lu small + corp body
THESAURUS
leprechaun
Ariel, Befind, Corrigan, Finnbeara, Mab, Oberon, Titania, banshee, brownie, cluricaune, dwarf, elf, fairy, fairy queen, fay, gnome, goblin, gremlin, hob, imp, kobold, ouphe, peri, pixie, pooka, puca, pwca, sprite, sylph, sylphidROGET THESAURUS
leprechaun
Demon
N demon, daemon, demonry, demonology, evil genius, fiend, familiar, daeva, devil, bad spirit, unclean spirit, cacodemon, incubus, Eblis, shaitan, succubus, succuba, Frankenstein's monster, Titan, Shedim, Mephistopheles, Asmodeus, Moloch, Belial, Ahriman, fury, harpy, Friar Rush, vampire, ghoul, afreet, barghest, Loki, ogre, ogress, gnome, gin, jinn, imp, deev, lamia, bogie, bogeyman, bogle, nis, kobold, flibbertigibbet, fairy, brownie, pixy, elf, dwarf, urchin, Puck, Robin Goodfellow, leprechaun, Cluricaune, troll, dwerger, sprite, ouphe, bad fairy, nix, nixie, pigwidgeon, will-o'-the wisp, ghost, revenant, specter, apparition, spirit, shade, shadow, vision, hobglobin, goblin, orc, wraith, spook, boggart, banshee, loup-garou, lemures, evil eye, merman, mermaid, merfolk, siren, satyr, faun, manito, manitou, manitu, possession, demonic possession, diabolic possession, insanity, Maxwell's demon, demoniac, demonic, demonical, impish, demoniacal, fiendish, fiend-like, supernatural, weird, uncanny, unearthly, spectral, ghostly, ghost-like, elfin, elvin, elfish, elflike, haunted, pokerish, possessed, possessed by a devil, possessed by a demon, demonically.For further exploring for "leprechaun" in Webster Dictionary Online