pinafore
noun [ C ] UK uk/ˈpɪn.ə.fɔːr/ us/ˈpɪn.ə.fɔːr/
(LOOSE CLOTHING)
(informal pinny)（尤指做饭时穿的）长围裙
a piece of clothing worn by women over the front of other clothes to keep them clean while cooking or doing other work in the house
(DRESS)
(US jumper)（常指穿在衬衫等衣服外面的）无袖连衣裙，女学生裙
a dress that does not cover the arms and is usually worn over another piece of clothing that does cover the arms