aku
1. (determiner) my - when talking of more than one thing. A possessive determiner which must be followed by a noun, unlike āku and ōku. This is the neutral or informal form and is not governed by the a and o categories. It cannot be stressed, in which case either āku or ōku must be used, depending on the category of the noun.
(Te Kākano Textbook (Ed. 2): 52; Te Kākano Study Guide (Ed. 1): 1;)
Ko aku tīpuna ērā. Those are my grandparents. / Those are my grandparents.
See also ngaku