ewùà noun /ē.wù.à/
ẹụ̀rà (alternative), ewùrà (alternative)
Definitions
  1. water yam; purple yam; Dioscorea alata or Dioscorea smilacifolia
Source: Wiktionary, where this word is spelled “ewua”. Reference: en-ewua-yo-noun-krA0ozDX