a snap as by a dog; for form, compare Irish glamhsan, a murmur, which is an aspirated form of glaim, howling. The Gaelic is similarly from glàm, devour, with possibly a leaning on the idea of noise as in glaim. H.S.D. has glamhus, open chops. glomhas, open chasm (Wh.).
Etymological dictionary of the Gaelic language.
Alexander Gairm Publications.
1982.