glam(b) (“shouting, confused noise, an orc”) + hoth (“crowd, hord”, here used as collective plural suffix)
Sindarin
glamhoth
collective name. Orcs, (lit.) Din-horde, Host of Tumult
orchoth
noun. the Orcs (as a race)
glam
noun. any body of Orcs
glamb
noun. any body of Orcs
glamhoth
noun. barbaric host of Orcs
glamhoth
noun. din-hord, the orcs
glamm
noun. any body of Orcs
glam
body of orcs
(i ’lam) (din, uproar, tumult, confused yelling of beasts; shouting, confused noise), pl. glaim (in glaim), coll. pl. glammath
A collective term for Orcs, translated “din-horde” or “host(s) of tumult” (UT/54, MR/109, PE17/39). This name is combination of glam “din, uproar” and hoth “host, horde” (WJ/391, SA/hoth). This term was sufficiently common that it was generalized into another word for Orc: glamog (WJ/391).
Conceptual Development: The term G. Glamhoth was used for Orcs in the earliest Lost Tales (LT2/160), but at this early stage was translated “People of Dreadful Hate” with its initial element being G. glâm “hate” (GL/39). In The Etymologies from the 1930s, Tolkien revised the derivation of N. Glamhoth so that its initial element was N. glamm “shouting, confused noise; barbarous speech” (Ety/GLAM), and the term retained essentially the same derivation in later writings.