blade

Definition

The flat, sharp part of a knife, sword, or similar tool used for cutting; can also refer to a helicopter rotor or a leaf of grass.

中文 刀片、剑片或类似工具的平坦、锋利部分，用于切割; 也可以指直升机旋翼或草叶

Example

"The chef sharpened the blade before slicing the vegetables."