uillean pipes /ˌɪlɪn ˈpʌɪps 
/ ▸ plural noun Irish bagpipes played held on the knee using bellows worked by the elbow, and having three extra pipes on which chords can be played. – ORIGIN early 20th century: from Irish píob uilleann, literally ‘pipe of the elbow’.
EnglishOxford Dictionary of English
