n. blade, sword

Sahrot Thu'um, med aan tuz, vey zeim hokoron pah, ol fin Dovahkiin komeyt ok rein!
Mighty Thu'um, like a blade, cut through enemies all, as the Dragonborn issued his roar!
(Book, Songs of Skyrim)

Het mah spaan vahdin Valkrys, wo krif voth ahkrin, nuz los folaas wah Ov mulaag do bodiis tuz.
Here fell the shield maiden Valkrys, who fought bravely, but was wrong to Trust the strength of a borrowed blade.
(Word Wall for Ov, Kyne’s Peace)

Het nok kopraan do Wynjolf ahrk Wuld, wen viintaas tuz vey zeim lahvu do rahgron Ogiim.
Here lies the body of Wynjolf the Whirlwind, whose shining blades cut through an army of angry Orcs.
(Word Wall for Wuld, Whirlwind Sprint)

Synecdoche that refers to a whole weapon, not exclusively the blade.

Likely from tu ‘hammer’ with the consonant z denoting sharpness, as seen in kinzon ‘sharp’ and ronaaz ‘arrow’.