Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary
1

knuckle

play
noun knuck·le \ˈnə-kəl\

Simple Definition of knuckle

  • : any one of the thick, bony parts (called joints) in your fingers

  • : a piece of meat that includes a joint from the leg of an animal

Source: Merriam-Webster's Learner's Dictionary

Full Definition of knuckle

  1. 1 a :  the rounded prominence formed by the ends of the two adjacent bones at a joint —used especially of those at the joints of the fingers b :  the joint of a knuckle

  2. 2 :  a cut of meat consisting of the tarsal or carpal joint with the adjoining flesh

  3. 3 :  something resembling a knuckle: as a (1) :  one of the joining parts of a hinge through which a pin or rivet passes (2) :  knuckle joint b :  the meeting of two surfaces at a sharp angle (as in a roof) c :  a pivotal point

  4. 4 plural :  a set of metal finger rings or guards attached to a transverse piece and worn over the front of the doubled fist for use as a weapon —called also brass knuckles

knuckled

adjective

Examples of knuckle in a sentence

  1. She rapped her knuckles on the table.



Origin and Etymology of knuckle

Middle English knokel; akin to Middle High German knöchel knuckle


First Known Use: 14th century


2

knuckle

verb knuck·le

Definition of knuckle

knuckled

knuckling

play \ˈnə-k(ə-)liŋ\
  1. intransitive verb
  2. :  to place the knuckles on the ground in shooting a marble

  3. transitive verb
  4. :  to press or rub with the knuckles



1740

First Known Use of knuckle

1740



KNUCKLE Defined for Kids

knuckle

play
noun knuck·le \ˈnə-kəl\

Definition of knuckle for Students

  1. :  the rounded lump formed by the ends of two bones (as of a finger) where they come together in a joint




Medical Dictionary

knuckle

play
noun knuck·le \ˈnək-əl\

Medical Definition of knuckle

  1. 1a:  the rounded prominence formed by the ends of the two adjacent bones at a joint—used especially of those at the joints of the fingersb:  the joint of a knuckle

  2. 2:  a sharply flexed loop of intestines incarcerated in a hernia




Learn More about knuckle


Seen and Heard

What made you want to look up knuckle? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a secret group of plotters

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

accommodate acommodate accomodate acommadate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ