Leprechaun - Irish fairy. The name leprechaun is derived from the old Irish word luchorpan which means "little body."
A leprechaun is a fairy taking the appearance of a miniature old man. Leprechauns are solitary creatures and spend their time making shoes and brogues. If you hear the sound of his hammer when he is at work you know you have found him. If caught, he can be forced to reveal the whereabouts of his treasure, but the captor must keep their eyes on him every second. If the captor's eyes leave the leprechaun, just for a moment, he will vanish.