名詞 jumper:

1. a person who jumps
2. an athlete who competes at jumping
3. a coverall worn by children
4. a small connector used to make temporary electrical connections
5. a loose jacket or blouse worn by workmen
6. a sleeveless dress resembling an apron; worn over other clothing
   同義詞：pinafore, pinny
7. (basketball) a player releases the basketball at the high point of a jump
   同義詞：jump shot

1. He exchanged the blue jumper for a red one.
   他把藍(lán)毛衣?lián)Q成了紅的。
2. You've turned your jumper inside out.
   你的套頭毛衣里外穿反了。
3. The tight jumper only accentuated his fat stomach.
   那件緊身套頭毛衣反更突出了他那肥胖的肚子。
4. That jumper sets off the blue of her eyes.
   在這件毛衣襯托下，她眼睛的藍(lán)色顯得更漂亮了。
5. My jumper has gone (ie has worn into holes) at the elbows.
   我的毛衣肘部已磨壞。
6. The child has picked a hole in his new jumper.
   孩子的新毛衣上勾了一個(gè)洞。

jumper

n.（名詞）
One that jumps.
跳躍者：做跳躍動(dòng)作的人
A type of coasting sled.
滑橇，拖橇：一種滑行的雪橇
Electricity A short length of wire used temporarily to complete a circuit or to bypass a break in a circuit.
【電學(xué)】 跳線，跨接線：一小段金屬線，臨時(shí)用來接通一段電路或越過電路的斷開處
Basketball See jump shot
【籃球】 參見 jump shot
A saddle horse that has been trained to jump over obstacles.
經(jīng)訓(xùn)練后能跳越障礙的馬

jumper
jumper 2

n.（名詞）
A sleeveless dress worn over a blouse or sweater.
無袖連衣裙：穿在襯衫或針織套衫外面的無袖連衣裙
A loose, protective garment worn over other clothes.
工作茄克：穿在其它衣服外面的寬松且有保護(hù)性的外套
Often jumpers A child`s garment consisting of straight-legged pants attached to a biblike bodice.
常作 jumpers 連衫褲童裝：一種兒童穿的外套，直統(tǒng)褲腿的長(zhǎng)褲和圍裙似的上裝連在一起
Chiefly British A pullover sweater.
【多用于英國】 套衫

來源：
Probably from jump [short coat]
可能源自 jump [短外套]