• Webster's Revised Unabridged Dictionary
    • n Yerk A sudden or quick thrust or motion; a jerk.
    • Yerk To move a quick, jerking motion.
    • Yerk To strike or lash with a whip.
    • Yerk To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to jerk. "Their wounded steeds . . . Yerk out their armed heels at their dead masters."
    • Yerk To throw out the heels; to kick; to jerk. "They flirt, they yerk , they backward . . . fling."
    • ***
Century Dictionary and Cyclopedia
    • yerk A Middle English form of yark.
    • yerk To lash; strike smartly; beat; hence, to rouse; excite.
    • yerk To throw, thrust, or pull sharply or suddenly; jerk; move with a jerk.
    • yerk To bind or tie tightly or with a jerk.
    • yerk To lash out, as a horse; kick.
    • yerk To move with sudden jerks; jerk.
    • n yerk A sudden or quick thrust or motion; a kick; a smart stroke; a blow. Also yark.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Yerk yėrk to throw or thrust with a sudden, quick motion, to jerk:
    • v.t Yerk yėrk (obs.) to beat, rouse, excite (Scot.): to bind or tie with a jerk.
    • ***


Webster's Revised Unabridged Dictionary
See Yerk
Chambers's Twentieth Century Dictionary
Akin to jerk.


In literature:

In spite of the crimes which Yerkes perpetrated in American cities, there was something refreshing and ingratiating about the man.
"The Age of Big Business" by Burton J. Hendrick
He it was who made the great 40-inch lens for the Yerkes Observatory.
"Side-lights on Astronomy and Kindred Fields of Popular Science" by Simon Newcomb
Mr Yerk, back the main topsail, and heave the ship to.
"Tom Cringle's Log" by Michael Scott
Made up and fashioned into Clinches, Bulls, Quirkes, Yerkes, Quips, and Jerkes.
"The Book of Noodles" by W. A. Clouston
But the price of Yerkes's affections was too high.
"Lady Merton, Colonist" by Mrs. Humphry Ward
Lee's recent value, secured photographically with the 40-inch Yerkes refractor, is 0.022.
"The New Heavens" by George Ellery Hale
When the frog had learned to take the correct path, marked by the white card, Prof. Yerkes changed the cards.
"The Outline of Science, Vol. 1 (of 4)" by J. Arthur Thomson
Mr. Yerkes, of Chicago, was a speculator who made millions in the street-car system.
"Dollars and Sense" by Col. Wm. C. Hunter
I pull, I twis', I yerk at dem jacket; 'e yent come.
"Nights With Uncle Remus" by Joel Chandler Harris
I'll say naething, but I'll yerk at the thinking.
"The Proverbs of Scotland" by Alexander Hislop

In poetry:

By cam ane gaed to the wrang kirk;
Douce he trottit alang.
"Puir body!" he cried, an' wi' a yerk
Aff o' his cuddy he sprang.
"Godly Ballants" by George MacDonald

In news:

Frans de Waal stands in a watchtower at the Yerkes National Primate Research Center north of Atlanta, talking about war.
At the Yerkes Regional Primate Research Center in Atlanta, a large chimpanzee named Winston is taking part in an unusually pleasant experiment.
Elizabeth Yerk Valver, 64, died Aug 1, 2012, after fighting cancer for more than 14 months, most recently at Hope Hospice, Cape Coral.
She leaves behind her mother, Lillian Yerk .
Jay Yerkes wins Vacaville's treasurer post.
Wilch recently bought the restaurant from Bill Yerkes.
Bill Yerkes plans to do with tacos what he's done for pizza.
Robert LaPorte of Shaftsbury and Philip Yerke of Waterford, N.Y.
In his Dec 12 letter ("Switch to natural-gas -based motor fuel"), Jack Yerkes advocates converting business and government vehicle fleets from diesel fuel to compressed natural gas (CNG).
Dec 19, 2001 reviewed by James Yerkes.
Lakeville Postmaster Ruth Yerkes (right) and one of her longtime customers, Lakeville resident Paula D'Ambrosio.
So do monkeys and chimpanzees, according to some clever experiments concluded recently at the Yerkes National Primate Research Center in Atlanta.
Two female chimpanzees, Tai and Ericka, groom each other at the Yerkes National Primate Research Center's field station outside Atlanta.
(Photo courtesy Yerkes National Primate Research Center, Emory University).
Yerke Zane Larson each visited Berghof, Adolf Hitler's residence in the Bavarian Alps.

In science:

The error is rectified in Saunders et al. (2009). 2 Exchange of letters between RE Peary & EB Frost, held at Yerkes Observatory, Wisconsin, USA and reproduced in the newsletter of the Center for Astrophysical Research in Antarctica (CARA), Yerkes Observatory (#5, January 1994).
Astronomy in Antarctica
Antarctic astronomy began to flourish in earnest from 1991, f ollowing the formation in the USA of CARA, the ‘Center for Astrophysical Research in Antarctica’ at the South Pole, with Doyal Harper, Director of Yerkes Observatory (a part of the University of Chicago), as its first Director.
Astronomy in Antarctica
We propose the simple model of learning based on which we derive and explain the Yerkes-Dodson law - one of the oldest laws of experimental psychology.
Simple Quantum Model of Learning Explains the Yerkes-Dodson Law in Psychology
The Yerkes-Dodson Law (YDL) is one of the oldest laws of psychology of motivation.
Simple Quantum Model of Learning Explains the Yerkes-Dodson Law in Psychology
The main goal of original Yerkes-Dodson experiments was to examine to what extent motivation and emotion arousal have an influence on learning process and facilitate acquisition of habits which are needed for individual in solving everyday problems.
Simple Quantum Model of Learning Explains the Yerkes-Dodson Law in Psychology