wacio

poss.

1. their, theirs. Their, theirs. Possessive pronoun indicating third person plural possession for noun class referring to places or abstract concepts.

Example: Ngigĩ-rĩ, itirĩ mũthamaki wacio, (Locusts—they have no king,); Nĩ getha itue Ngai mwĩhoko wacio, (that they too might put their confidence in God,)