na̱ksałgwisliis [na̱k/sa/łgwis/*liis]
kinship term noun. nephew-in-law or niece-in-law
Na̱ksałgwisliisu gwa̱'a̱, Meli waat. This is my niece-in-law, Mary is her name.

Bibliographic sources: Dunn, Practical Dictionary entry: 1497.
Source: Draft Dictionary entry.