ō tāua

1. (determiner) our(yours and mine and more than one thing) - a possessive determiner.

(Te Kākano Textbook (Ed. 2): 52-56;)

Kei hea ō tāua waka rererangi? / Where are our aircraft?

2. (determiner) we have, you (one person) and I have - when referring to more than one thing.

(Te Kākano Textbook (Ed. 2): 108-110;)

He tuākana ō tāua. / You and I have elder sisters.

3. Used in these ways listed above when the possessor has no control of the relationship or is subordinate, passive or inferior to what is possessed.

(Te Kākano Textbook (Ed. 2): 54-56, 140-141;)

Te Kākano 3rd Edition