hewú verb /hē.wú/
Definitions
  1. to grow grey hair
Etymology
From hù (“to sprout; to grow [hair]”) + ewú (“grey hair”).
Component words
hùto sprout; to grow [hair]ewúgrey hair
Source: Wiktionary, where this word is spelled “hewu”. Reference: en-hewu-yo-verb-TX7h0j7k