Maitai. 1. a. Good, beautiful, agreeable. An obsolete word, mentioned by Savage, 1807, and by Nicholas, 1817. Tukua kia haere kia whakaakotia ki te kihi maitai (M. 274).
2. n. Iron. (Probably from Tupaea, Cook's interpreter, saying that it was maitai, good.)
3. = mahitahi, adult whitebait (Westland).
Williams Dictionary