尻しり肉にくしりにくMeanings1nounrump; butt fleshcolloquialColloquial term for the flesh of the buttocks, often used in casual or humorous contexts.彼かれは椅い子すから立たち上あがるとき、尻しり肉にくが痛いたいと言いった。When he stood up from the chair, he said his butt flesh hurt.