Kāhawai, n. Hydroprogne caspia, Caspian tern; a bird.
Williams Dictionary
Kahawai, n. Arripis trutta, a fish. Ka homai nga kahawai ma Paoa (T. 190). E haere mai ana nga rau e toru, me te waha kahawai, kua tata (i.e., like a shoal of kahawai) (T. 202).
E toru ngā kahawai, e rua ngā tāmure.There are three kahawai and two tāmure (fish).Numbering things - e rua, e toru...