1
- Brit. a knitted garment typically with long sleeves, worn over the upper body〈英〉（尤为长袖）毛线上衣。
2
- historical a loose outer jacket worn by sailors〈史〉（水手穿的）宽松短上衣。
3
- N. Amer. a pinafore dress〈北美〉围裙。
词源
mid 19th cent. (in sense 2)： probably from dialect jump 'short coat', perhaps from Scots jupe 'a man's （later also a woman's） loose jacket or tunic', via Old French from Arabic jubba. Compare with JIBBA.
1
- a person or animal that jumps跳跃者; 跳高运动员; 跳跃的动物。
2
- （亦作jumper wire）a short wire used to shorten an electric circuit or close it temporarily跳线, 跨接线（一种用于缩短或暂时关闭电路的短线）。
3
- Nautical a rope made fast to keep a yard or mast from jumping【航海】支索（防止帆桁或桅杆移动而系紧的绳索）。
4
- a heavy chisel-ended iron bar for drilling blast holes钻孔机; 冲击钻杆（一种末端为凿子, 用于钻凿爆破孔的重铁杆）。
5
- a mushroom-shaped brass part in a tap which supports the washer阀芯（水龙头里托住垫圈的蘑菇状铜制部件）。