Source: Nisga'a Tribal Council / Ayuukhl Nisga'a Department, Aiyansh BC
Gin is a derivation of Gwin meaning "place of"; Sgox means "to transport goods and/or people by canoe or boat, a load at a time"; Ksi refers to "water", and also means "outwards", hence ksi in the context of Ksi Ginsgox could simply mean Ginsgox River, or it could refer to a tributary flowing into a larger body of water such as Lisims (the Nass River).
Source: Nisga'a Tribal Council / Ayuukhl Nisga'a Department, Aiyansh BC