bedpan; chamber pot; potty
A portable toilet used by bedridden patients or young children during toilet training. The polite prefix お is part of the word.
I used a bedpan while I was in the hospital.
The child is practicing using the potty.
Usually written in kana; the kanji forms are rare or search-only.
Rare kanji spelling; the kana form is standard.
Rarely used kanji form; the kana form is standard.
The origin is uncertain. The お is a polite prefix, and まる may be related to 丸 (round), referring to the shape of early chamber pots.