singlet/ˈsɪŋglɪt; `sɪŋɡlɪt/ n(Brit)(a) man's sleeveless garment worn under or instead of a shirt; vest 男用无袖汗衫; 背心.(b) such a garment worn by runners, athletes, etc 无袖运动衫.
牛津英汉双解词典