You’re thinking of gabhal (pronounced “gowl”) it means fork or crotch and is the favoured insult in the old home town. Gall has the long ‘Ah’.
There's a village near me called Gabhailín in Irish. Anglicised to Golden for some reason.
It's obvious where the name comes from.
Not far away is a hill called Laghtnafrankee which in Irish is Leacht na bhFrancach. And as @DavidBOC points out that could be a reference to Frenchmen or rats. Laghtnafrankee is part of the Comeragh Mountains which I was once told were named by all those Walshs for their similarity to the mountains of Wales.