clover
/ˈkləuvə(r); `klovɚ/ n
1 [U] small plant with (usu) three leaves on each stalk, and purple, pink or white flowers, grown as food for cattle, etc 车轴草（一种矮小植物, 可作牧草, 每一叶柄上通常有三片叶子, 花呈紫色、 粉红色或白色）
(a) ,four-leaf/-leaved `clover, ie a rare type of clover with four leaves, thought to bring good luck to anyone who finds it 四叶车轴草（一种稀有的车轴草品种, 叶柄上有四片叶子, 认为可给发现它的人带来好运）.
2 (idm 习语) in clover (infml 口) in comfort or luxury 安逸; 舒适; 富裕
be/live in clover 生活优裕.