noun
A traditional Japanese garment worn around the abdomen, often by children or workers, to protect the belly or keep warm. Can also refer to a bib-like apron.
昔の子どもはよく腹当てをしていた。
Children in the old days often wore a bellyband.
この腹当ては炊事のときに便利だ。
This apron is handy when cooking.
noun
Historical armor term: a plate protecting the abdomen, part of traditional Japanese armor (yoroi).
鎧の腹当ては鉄でできていた。
The breastplate of the armor was made of iron.