uillinn istigh

== Irish == === Noun === uillinn istigh f (genitive singular uillinne istigh, nominative plural uilleannacha istigh) (geometry) interior angle ==== Declension ==== === Mutation === === References === Ó Dónaill, Niall (1977), “uillinn istigh”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN