n (1)(青)草(kind of plant with many thin green leaves that covers the earth in fields，garden，wild places，etc)[U]：live on～靠草活着;a blade of～一片青草叶;wild/dried～野/干草;a meadow covered/planted with～青草覆盖的/种满青草的场地～seed/snake 草籽/草蛇;～shake 无毒小蛇;～roots 草根;平民百姓;The～is (always) greener on the other side (of the fence). 这山望着那山高。

(2)禾本科植物(any species of grass，including also corn，reeds and bamboo)[C]：study～es 研究禾本科植物;arrange some attractive/tall～es with the flowers 把一些引人注目/高的禾本科植物与花种在一起;

(3)草地(场，坪)(lawn)[U]：lie on/walk on the～躺/走在草地上;cut/mow the～割/割草;Half of the farm is～. 农场的一半是草场。

(not) let the grass grow under one's feet(不)浪费时间，(不)抓紧时机：The Managing Director is not a man who lets the～grow under his feet when there are decisions to be made. 这位经理作决定时，总是能当机立断。

put out to grass 强迫退休：He's too old to work fast and is put out to～.他年纪太大了，无法快速工作，所以被强迫退休了。

→′grassy adj 多(长满)草的;′grassland n 牧场;草地(原);

v(1)以草覆盖，使长草(cover sth with grass)[T+n，T+n+adv (over)]：～the field 使地长草;

(2)以草喂(动物)(feed(an animal or animals) with growing grass)[T+n](AmE)：～goats 用草喂山羊;

(3)(罪犯)向警方告发((usu of a criminal)tell the police or authorities about sb one knows who has committed a crime)[I，I+prep (on)](BrE)(sl通常derog)：Bill must have～ed (on us). 比尔一定是(把我们)出卖了。