Douglas Harper's Etymology Dictionary
uilleann
in uilleann pipe, from Irish uilleann "elbow," from Old Irish uilenn, from PIE *ol-ena-, from root *el- (1) "elbow, forearm" (see ell (n.1)).
Wiktionary
Wikipedia
Usage examples of "uilleann".
The unlucky man was glad to escape and take his place among his fellow temps, two more guitarists, a violinist, a flautist, a harpist and a woman playing the uilleann pipe.
The plaintive wail of the uilleann pipe began to snake in and out of the melody.