knife: 意味と定義

A cutting instrument consisting of a sharp blade attached to a handle.

A cutting edge; a blade.

To use a knife on, especially to stab; wound with a knife.

Informal To betray or attempt to defeat by underhand means.

To cut or slash a way through something with or as if with a knife: The boat knifed through the waves.

under the knife Informal Undergoing surgery.