adj (1)(人或動(dòng)物)瘦但健康的((of a person or animal) without much flesh;thin but fit)：a～，handsome man 體瘦英俊的男子;His body became～. 他的身體瘦了。
(2)(肉)瘦的，少(無)脂肪的((of meat)containing little or no fat)：～beef 瘦牛肉;I only eat～meat. 我只吃瘦肉。
(3)量少的;質(zhì)量低的(small in amount or low in quality)[尤作attrib]：a～diet/harvest 量少的飲食/歉收;～profits 薄利;～concrete 水泥成份少的混凝土;Supplies were～in this area. 這一地區(qū)過去供應(yīng)奇缺。
(4)(指一段時(shí)間)利潤(產(chǎn)量等)低的;((of a period of time) lacking in profit，productiveness，etc)：～years 歉收之年;In recent years，the cinema has fallen on～times. 近幾年，電影院不景氣。
n瘦肉(lean part of meat)[U]：a lot of～but not much fat 瘦肉多肥肉少;
【辨異】lean與delicate、slender、slim和thin的區(qū)別見DELICATE。