Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'
1. smooth; flat; lacking bumps and dentsUsually written using kana alone
Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'
2. featureless; uneventfulUsually written using kana alone
Noun
3. noppera-bō; mythical being with flat featureless faceUsually written using kana alone
Wikipedia definition
4. Noppera-bōThe Noppera-bō, or faceless ghost, is a Japanese legendar... Read more Other forms
のっぺら坊 【のっぺらぽう】、野箆坊 【のっぺらぼう】、野箆坊 【のっぺらぽう】、野箆坊 【ぬっぺらぼう】