lan·cet /ˈlɑːnsɪt $ ˈlæn-/ noun [countableC] 1. a small very sharp pointed knife with two cutting edges, used by doctors to cut skin and flesh 〔医生用的〕手术刀,柳叶刀 SYN scalpel
2. lancet window/arch technicalAA a tall narrow window or arch that is pointed at the top 尖拱窗/尖拱