chopping board; cutting board
flat chest; tiny breasts
「俎」 has another reading with different meanings.
altar of sacrifice
まな板の上で野菜を切ります。
I bought a new cutting board.
古いまないたで包丁を研ぐ。
Sharpen a knife on the old cutting board.
まな板を使い終わったら洗います。
Wooden cutting boards need proper care.