noun
stripped to the waist; naked from the waist up
Describes the state of being bare-chested, often in informal or work settings. Can also refer to the act of stripping down.
暑いので、彼は肌脱ぎになって作業を続けた。
Because it was hot, he continued working stripped to the waist.
祭りでは、男たちが肌脱ぎで神輿を担いだ。
At the festival, the men carried the portable shrine bare-chested.