arun noun /ā.ɾũ̄/ spelling unconfirmed
Definitions
  1. mouth
Etymology
Cognate with Olukumi ẹrun and Igbo ọ́nú, proposed to be derived from Proto-Yoruboid *ɛ́-lʊ̃
Source: Wiktionary · etymology 3, where this word is spelled “arun”. Reference: en-arun-yo-noun-TPNc-HQ1