jacket
/ˈdʒækɪt; `dʒækɪt/ n
1 short coat with sleeves 短上衣; 夹克
a tweed jacket 花呢上衣. =>illus 见插图.
2 outer cover round a boiler, tank, pipe, etc to reduce loss of heat （锅炉、 槽、 管等的）保温套
a water jacket, iecover used to cool an engine （发动机的）冷却套.
3 (also`dust-jacket) loose paper cover for a hardback book （精装书的）护封.
4 (of a potato) skin （指马铃薯）皮
[attrib 作定语]
, jacket potatoes, ie potatoes baked without being peeled 带皮烤熟的土豆.