òpòsò noun /ò.k͡pò.sò/
Definitions
  1. married woman Ekiti
Etymology
Likely from Edo, see Itsekiri okposo (“old woman”), Yekhee okposo (“woman, female”)
Source: Wiktionary, where this word is spelled “oposo”. Reference: en-oposo-yo-noun-2CEf1X9G