1

knife

noun, often attributive \ ˈnīf \

Definition of knife

plural knives play \ˈnīvz\
1 a :a cutting instrument consisting of a sharp blade fastened to a handle
b :a weapon or tool resembling a knife
2 :a sharp cutting blade or tool in a machine
3 :surgery 4 usually used in the phrase under the knife

knifelike

play \ˈnīf-ˌlīk\ adjective

Examples of knife in a Sentence

  1. Each dinner guest gets two forks, a knife, and a spoon.

  2. He pulled a knife on me and threatened to stab me with it.

Recent Examples of knife from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knife.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of knife

Middle English knif, from Old English cnīf, perhaps from Old Norse knīfr; akin to Middle Low German knīf knife

Other Weapons and Explosives Terms


2

knife

verb

Definition of knife

knifed; knifing
transitive verb
1 :to use a knife on; specifically :to stab, slash, or wound with a knife
2 :to cut, mark, or spread with a knife
3 :to try to defeat by underhanded means
4 :to move like a knife in
  • birds knifing the autumn sky
intransitive verb
:to cut a way with or as if with a knife blade
  • the cruiser knifed through the heavy seas

Examples of knife in a Sentence

  1. He died after being knifed in the chest.

  2. ships knifing through the waves

Recent Examples of knife from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knife.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of knife

1865



KNIFE Defined for English Language Learners

knife

noun

Definition of knife for English Language Learners

  • : a usually sharp blade attached to a handle that is used for cutting or as a weapon


knife

verb

Definition of knife for English Language Learners

  • : to injure (someone) with a knife

  • : to move easily and quickly like a knife cutting through something


KNIFE Defined for Kids

1

knife

noun \ ˈnīf \

Definition of knife for Students

plural knives \ˈnīvz\
1 :a cutting instrument consisting of a sharp blade fastened to a handle
2 :a cutting blade in a machine

2

knife

verb

Definition of knife for Students

knifes; knifed; knifing
:to stab, slash, or wound with a knife

Medical Dictionary

knife

noun \ ˈnīf \

medical Definition of knife

plural knives play \ˈnīvz\
1 :any of various instruments used in surgery primarily to sever tissues: as
a :a cutting instrument consisting of a sharp blade attached to a handle
b :an instrument that cuts by means of an electric current
2 :surgery 3 usually used in the phrase under the knife
  • went under the knife yesterday
  • was afraid of the knife


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