Note 20 — Chapter VII · Triumphs of the Water-world

I should rather suppose, then, that the pigmies in the water-world were believed to consist of many grades or classes, and to be innumerable like the Luchorpáin of Irish legend, which were likewise regarded as diminutive. With the Luchorpáin were also associated20 Fomori or Fomoraig (modern Irish spelling Fomhoraigh), and Goborchinn, ‘Horse-heads.’ The etymology of the word Fomori has been indicated at p. 286 above, but Irish legendary history has long associated it with muir, ‘sea,’ genitive mara, Welsh mor, and it has gone so far as to see in them, as there suggested, not submarine but transmarine enemies and invaders of Ireland. So the singular fomor, now written fomhor, is treated in O’Reilly’s Irish Dictionary as meaning ‘a pirate, a sea robber, a giant,’ while in Highland Gaelic, where it is written fomhair or famhair, it is regularly used as the word for giant. The Manx Gaelic corresponding to Irish fomor and its derivative fomorach, is foawr, ‘a giant,’ and foawragh, ‘gigantic,’ but also ‘a pirate.’ I remember hearing, however, years ago, a mention made of the Fomhoraigh, which, without conveying any definite allusion to their stature, associated them with subterranean places:—An undergraduate from the neighbourhood of Killorglin, in Kerry, happened to relate in my hearing, how, when he was exploring some underground ráths near his home, he was warned by his father’s workmen to beware of the Fomhoraigh. But on the borders of the counties of Mayo and Sligo I have found the word used as in the Scottish Highlands, namely, in the sense of giants, while Dr. Douglas Hyde and others inform me that the Giant’s Causeway is called in Irish Clochán na bh-Fomhorach.