Definition of union pipes in English:

union pipes

noun

  • A type of bagpipes, associated with Ireland, played held on the knee using bellows worked by the elbow; = "uillean pipes".

Origin

Late 18th century; earliest use found in World. Apparently from Irish uilleann, genitive singular of uille elbow + the plural of pipe, after Irish píoba uilleann, with folk-etymological remodelling of the first element after union, perhaps arising from the pronunciation of the Irish word with a palatal l.

Pronunciation

union pipes

/ˈjuːnɪən pʌɪps/