Überbooru

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corset

コルセット

1) A close-fitting undergarment, often reinforced by stays, worn to support and shape the waistline, hips and breasts.
2) A medieval outer garment, especially a laced jacket or bodice.

In general, use this tag for underbust corsets, overbust corsets, and waist cinchers.

See also

source: danbooru wiki