acarriage in a train with beds for passengers to sleep in, or one of the beds in this carriage, or the type of train that has these carriages（列车的）卧铺车厢，卧铺；卧铺列车

[ C ] UK US railroad tie one of the heavy horizontal blocks that supports a railway track枕木

[ C ] UK a small gold or silver ring that is worn in a pierced ear (= one that has a hole in it) to stop the hole from closing while other earrings are not being worn（为防止耳洞长死而戴的）小耳环

[ C ] a person or thing that is suddenly and surprisingly successful after a long period of not achieving anything（长期蛰伏后）一鸣惊人的人；爆冷的人（或物）

[ C ] a spy who only becomes active a long time after being put in place by an organization or country潜伏特工

[ C ] US UK sleepsuit a piece of clothing for a baby that covers the whole body, worn especially at night婴儿全身睡衣