“肘部”的英语可以翻译为：[医]elbow ...

他的袖子卷到了肘部。His sleeves were rolled up to his elbows.她肘部以下都是肥皂沫子。She was up to her elbows in suds.最后我把这件旧外套的肘部磨出了窟窿.I've worn through the elbow of this old coat at last....