koinā
1. (interjection) it is that, that's, those are, that was, those were, hence, consequently - variation of koia nā.
(Te Pihinga Textbook (Ed. 2): 8;)
I te wā e tamariki ana koinā te mahurutanga o te tangata. Ko tēnā te wā hei whāwhātanga ki te mātauranga (TTT 1/2/1925 wh 179). / During the time of childhood a person is untroubled. That's the time to tackle education.
See also koia nā