knife

1. an instrument for cutting, consisting essentially of a thin, sharp-edged, metal blade fitted with a handle.

2. a knifelike weapon; dagger or short sword.

3. any blade for cutting, as in a tool or machine.

1. to apply a knife to; cut, stab, etc., with a knife.

2. to attempt to defeat or undermine in a secret or underhanded way.

1. to move or cleave through something with or as if with a knife.

   The ship knifed through the heavy seas.

1. under the knife, in surgery; undergoing a medical operation.

   The patient was under the knife for four hours.

1. a cutting instrument consisting of a sharp-edged often pointed blade of metal fitted into a handle or onto a machine

2. a similar instrument used as a weapon

3. to have a grudge against or victimize someone

4. to make a bad situation worse in a deliberately malicious way

5. people are determined to harm or put a stop to someone

   the knives are out for Stevens

6. undergoing a surgical operation

1. to cut, stab, or kill with a knife

2. to betray, injure, or depose in an underhand way

1. see at gunpoint (knifepoint); under the knife; you could cut it with a knife.