jumper /ˈdʒʌmpə/

• 1. 

  N-COUNT If you refer to a person or a horse as a particular kind of jumper, you are describing how good they are at jumping or the way that they jump. 跳跃者; 跳跃的动物

  例：

  He is a terrific athlete and a brilliant jumper.

  他是一名优秀的运动员和一位杰出的跳跃者。

• 2. 

  N-COUNT A jumper is a warm knitted piece of clothing that covers the upper part of your body and your arms. 针织套衫 [英国英语]

• 3. 

  N-COUNT A jumper is a sleeveless dress that is worn over a blouse or sweater. (穿在衬衫或毛线衫外的) 无袖连衣裙 [美国英语]

• 4. 

  N a boring tool that works by repeated impact, such as a steel bit in a hammer drill used in boring rock 钻孔器