tō tāua
1. (determiner) our, i.e. your (one person) and my (referring to one thing) - often followed by a noun but can stand without one.
(Te Kākano Textbook (Ed. 2): 52-56;)
2. (determiner) we (you and I) have (referring to one thing).
(Te Kākano Textbook (Ed. 2): 108-110;)
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;)