1、n.夹克衫; 短上衣; (书籍通常带有图案或画面的)护封，书套; (热水管的)保温套，绝热罩;2、vt.给…穿夹克; 给…装护套; 给…包上护封; 〈口〉打;3、[例句]That jacket was a really good buy.那件夹克确实买得很划算。4、【】其他】第三人称单数：jackets 复数：jackets 现在分词：jacketing 过去式：jacketed 过去分词：jacketed