N. alagos n. “storm (of wind)” (Category: Storm)
A noun in The Etymologies of the 1930s glossed “storm of wind”, an elaboration of N. alag “rushing” so perhaps “*(lit.) rushing (of winds)” (Ety/ÁLAK). A similar (masculinized?) form appeared in the name N. Ancalagon “Biting-Storm” (Ety/NAK). Tolkien continued to use this name in later writings, but it was untranslated.
References ✧ Ety/ÁLAK, ÁNAK, NAK
|alag||“rushing, impetuous”||✧ EtyAC/ÁLAK|
|#-os||“abstract noun”||✧ Ety/ÁLAK (#-os)|
|ᴹ√ÁLAK > alagon||[alakosse] > [alakoss] > [alagoss] > [alagos]||✧ Ety/NAK|