yao

poss.

1. their. Their. A third person plural possessive pronoun used with nouns of certain classes (particularly class 9 or class 3).

Example: Makoiga, Nĩtũgĩtuei mĩkwa yao, (“Let us break their shackles); Njĩra yao ĩrogĩa nduma, na ĩtendere, (Make their way slippery and dark,)