Tāura = tauira, n. 1. A tohunga who accompanies an army to battle.
2. The second order of learners being initiated in esoteric lore. Ngau atu ki ona taura, ngau atu ki ona pia (K.).
Williams Dictionary
Taura, n. 1. Rope, cable, cord. Katahi a Whakatau ka nanao ki te pito o tana taura (T. 62). Taura whakaara, fore stay of a canoe sail; actually the rope by which the mast and sail together were raised.
2. A piece of wood for fastening the window of a whare.
NOTE.—The fact that the word means rope, cable, in Ta., Ha., Nuk.; and anchor in Sa., Tik., Ni., Rar.; and both cable and anchor in Fu., To., Uv., raised a strong presumption that there is some connection with tau (v).
Williams Dictionary