uillean pipesPronunciation: /ˈɪlɪn, ˈɪlən/Definition of uillean pipes 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'uillean pipes in other Oxford dictionaries Definition of uillean pipes in the US English dictionary