fùrọ̀ noun /fù.ɾɔ̀/
Definitions
  1. anus vulgar
Etymology
Probably from Baatonum pùrɔ̀ru, a sound change from p-->f may be possible as Yoruba does not have /p/
Source: Wiktionary, where this word is spelled “furọ”. Reference: en-furọ-yo-noun-c33RvKId