The definition of leprechaun is a little man fairy in Irish folklore who plays pranks and is thought to give a pot of gold to those who are able to trick or catch him.
An example of a leprechaun is the character on the Lucky Charms cereal box.
Ir. Folklore a fairy in the form of a little old man who can reveal a buried crock of gold to anyone who catches him
Origin of leprechaunIrish luprac?n ; from Old Irish luchorpan ; from lu, little + corp?n, diminutive of corp, body ; from Classical Latin corpus, body: see corpus
In Irish folklore, a mischievous elflike creature or fairy who grants wishes or reveals the location of hidden treasure when captured.
Origin of leprechaunIrish Gaelic luprachán, alteration of Middle Irish luchrupán, from Old Irish luchorpán : luchorp (lú-, small; see legwh- in Indo-European roots + corp, body, from Latin corpus; see kwrep- in Indo-European roots) + -án, diminutive suff.