noun
rice bowl
A bowl specifically for serving cooked rice; a staple item in Japanese tableware.
毎日、飯茶碗にご飯をよそって食べている。
Every day, I serve rice into a rice bowl and eat it.
丼 is a larger bowl for dishes like donburi, whereas 飯茶碗 is a smaller bowl for plain rice.
Compound of 飯 (めし, 'cooked rice') and 茶碗 (ちゃわん, 'tea bowl; bowl'). The reading めしぢゃわん reflects rendaku voicing of ちゃわん to ぢゃわん.