[ C or U ] a round fruit containing a lot of juice that is sour like a lemon but smaller and green, or the small tree on which this fruit grows酸橙；酸橙树

[ C ] also lime tree, US usually linden a large tree with leaves shaped like a heart and pale yellow flowers欧椴树

[ U ] also quicklime a white substance that is used especially to spread on the land to improve the quality of earth so that crops grow better石灰

[ U ] also limescale, scale white material that collects inside water pipes, kettles, etc. in areas where the water is hard (= contains a lot of natural chemicals)水垢

to spread the substance lime on a piece of land撒石灰于