プログレッシブ和英中辞典(第4版)の解説
やせこける【痩せこける】
waste away; be emaciated
母は長い病気ですっかりやせこけている
My mother 「has lost a lot of weight [is emaciated] because of her long illness.
彼は骨と皮ばかりにやせこけた
He was reduced to 「a mere skeleton [skin and bones].／He was worn to a shadow.
やせこけた顔
a haggard face
やせこけた姿を人前にさらしたくない
I do not want people to see my emaciated figure.