/naɪf ||; naɪf/noun [C] (plural knives /naɪvz ||; naɪvz/) a sharp flat piece of metal (a blade) with a handle. A knife is used for cutting things or as a weapon 刀: The carving knife is very blunt/sharp. 这把切肉刀钝╱锋利得很。a knife and fork 刀叉a penknife/pocket knife/flick knife 小折刀；弹簧折刀 ☞picture at kitchen 见kitchen插图