mahogany gaspipe exclamation 1noun 1forms 1 exclamation1 •(slang, old-fashioned) a representation of how the Irish language sounds to a non-speaker; gobbledegook.I've no idea what they're going on about - it's all mahogany gaspipe to me - but next thing Brendan tips me the nod and a wink and gives me to understand that the job is oxo. — 1993 noun1 •(slang, old-fashioned) A Gaeilgeoir. formsmahogany gaspipes
