jumper/ˈdʒʌmpə(r); `dʒʌmpɚ/ n1 (Brit) = jersey 1.2 (US) pinafore 无袖连衣裙.3 person, animal or insect that jumps 跳跃的人、 鸟兽或昆虫.
牛津英汉双解词典