süü aks [*süü/*aks]
common noun. mouth of river
Heelda ḵ'a̱lmoos da sg̱asüü Ksyeen. There are a lot of crabs at the mouth of the Skeena.
Heelda ḵ'a̱lmoos da süü aks. There's a lot of crab by the mouth of the river.

Source: Draft Dictionary entry.