sg̱asüü [sg̱a/*süü]
Stem with modifying proclitic composed of: sg̱a=  across, süü  mouth of
common noun. mouth of river
Sg̱at'aa 'wiileeksm loop a sg̱asüü ḵ'ala'aks. A big rock is sitting at the mouth of the river.

Bibliographic sources: Dunn, Practical Dictionary entry 1791.
Source: Draft Dictionary entry.