On-line Te Reo Māori Dictionary

mātaitai. 1. a. Tasting of salt, brackish. He mataitai te wai o tenei kainga.

2. n. Fish or other foodstuff obtained from the sea or from lakes Whano koe … ki te keri mataitai mau (M. 78). Ka rua nga waka mataitai a te wahine nei (T. 196). Kai tonu ia i te mataitai o taua roto (T. 78). Ka titiro hoki ki te whata o te aruhe, o te mataitai (T. 79).

Williams Dictionary