knuckle

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Related to knuckled down: out of whack, buckle down

knuckle

 [nuk´'l]
the dorsal aspect of any interphalangeal joint, or any similarly bent structure.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

knuck·le

(nŭk'ĕl),
1. A joint of a finger when the fist is closed, especially a metacarpophalangeal joint.
2. A kink or loop of intestine, as in a hernia.
[M.E. knokel]
Farlex Partner Medical Dictionary © Farlex 2012

knuckle

(nŭk′əl)
n.
a. The prominence of the dorsal aspect of a joint of a finger, especially of one of the joints connecting the fingers to the hand.
b. A rounded protuberance formed by the bones in a joint.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

knuck·le

(nŭk'ĕl)
1. A joint of a finger when the fist is closed, especially a metacarpophalangeal joint.
2. A kink or loop of intestine, as in a hernia.
[M.E. knokel]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

knuckle

The common name for a finger joint.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
However, Septimus should be given plenty of credit for the way he knuckled down under pressure, this once-raced maiden winnershowing his inexperience before running on stoutly into a strong headwind.
But rather than sulk, the Addicks star knuckled down.
But then Park knuckled down well against the elements and were rewarded with a try by Ashcroft after good work by Joe McGowan, who did well enough on his debut on the wing.
GOLF: American Anthony Kim enjoyed a world-class Ryder Cup celebration, but he knuckled down to open a four-stroke lead after the opening round at the lucrative Tour Championship.
But he didn't want to and he's knuckled down," said McCarthy.
However, it was always on the cards that runaway leader Amy Louise would not be able to maintain her strong gallop, and that explains why Jamieson Gold never drifted to anything more than 1.7 in running before he knuckled down under pressure and caught the front-runner in plenty of time.
QUEEN OF POLAND supplied trainer David Loder with his third success in the last seven years of the Listed Star Stakes as she knuckled down well to score under Tom Queally at Sandown Park yesterday.
``The players have knuckled down and are playing with great spirit,'' he said.