bẹ́ẹ́rẹ̀ noun /bɛ́ɛ́.ɾɛ̀/
Definitions
  1. eldest child; (especially) eldest daughter
Etymology
Probably from Baatonum bɛɛrɛ
Source: Wiktionary, where this word is spelled “bẹẹrẹ”. Reference: en-bẹẹrẹ-yo-noun-Mi0-c4UG