n. deed, exploit

Qethsegol vahrukiv sod do Siglif fin Vonun wo aam lot Keizaal ni ol kendov ko vu nuz ol sah ko suvulaan.
[(This) stone commemorates (the) deeds of Siglif the Unseen, who served great Skyrim not as (a) warrior in dawn, but as (a) phantom in twilight.]
(Unused Word Wall for Sah, Phantom Form)

Heroic or notable deeds.