ōu
1. (particle) (determiner) your (one person when referring to more than one thing). Plural of tōu and used when the possessor has, or had, no control of the relationship or is subordinant, passive or inferior to what is possessed. A possessive determiner.
(Te Kākano Textbook (Ed. 2): 52-56, 108-109, 140-142;)