おしっこ おしっこ noun pee, urine (childish) informaldaily-lifehealth 1. pee, urine Childish word for urine or the act of urinating. Universally understood and commonly used with children, but also used casually by adults. おしっこしたい。🔊 I need to pee. おしっこ行(い)ってくる。🔊 I'm going to go pee. 子供(こども)がおしっこを漏(も)らしてしまった。🔊 The child wet themselves. Register: Childish but socially acceptable. Commonly used when speaking to or about children, and casually among adults in informal settings.Common expressionsおしっこする (to pee)おしっこに行(い)く (to go pee)おしっこを漏(も)らす (to wet oneself)Alternatives: More formal terms include 小便(しょうべん) (crude/direct) and 尿(にょう) (medical). Polite expressions include お手洗(てあら)いに行(い)く (to go to the restroom). general Added 2026.1.31 13:25 · Revised 2026.9.2 13:01 09000/09083_oshikko