Ar mo shlí ar ais chuig Luimneach anois. Chuas thar chomhartha le "Muing an Phúca" air. Cad is brí le muing? Tá a fhios agam go bhfaca mé cheana féin é, ach ní cuimhin liom an bhrí leis

Moing an Phúca/​Muingaphuca (baile fearainn) Ciarraí

muing, -e, -eanna, f., the mane of a horse. See mong.
muing, -e, -eanna, f., a sedgy plain, a morass. See mong.
mong, g. muinge, pl. -a and -acha, f., the mane or crest of a beast; a beard; long hair of the head; a growth of grass, wood, etc.; hence, a grove, a wood, a forest.
mong, g. muinge, pl. -a, -acha, f., a fen, a moor, a morass, a swampy plain; tré imeallaibh churraigh, tré mhongaibh, tré shlím-ruaidhtibh, through margins of morasses, through meads, through barren moorlands (O'Ra.).

The above might also answer the question at:
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Múinteoir Gaeilge - Irish Teacher
My "specialty" is Connemara Irish, particularly Cois Fhairrge dialect, but I can also speak Ulster and Munster Irish with native-level pronunciation.
Is fearr Gaeilge ḃriste ná Béarla cliste, cinnte, aċ i ḃfad níos fearr aríst í Gaeilge ḃinn ḃeo na nGaeltaċtaí.
Gaeilge Chonnacht (GC), go háraid Gaeilge Chois Fhairrge (GCF), Gaeilic Uladh (GU), Gaelainn na Mumhan (GM), agus Gaeilge an Chaighdeáin Oifigiúil (CO).

GRMA!