Read Edit View history 咬甲癖 yǎojiǎpǐ onychophagia Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 咬甲癖 yǎojiǎpǐ onychophagia noun · onychophagia (nail biting) 许多儿童在压力大时会出现咬甲癖。 Edit Delete References Add reference No references for this word.