• WordNet 3.6
    • n rachet mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction
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In literature:

A horrid, racheting cough sounded from straight ahead.
"The Yellow Horde" by Hal G. Evarts
That corsets wuld be pervided with rachets and set screws, to nabel them to be drawn more titely round the waste.
"The Bad Boy At Home And His Experiences In Trying To Become An Editor - 1885" by Walter T. Gray
These were released by means of a rachet operated by the pedal to which the Flight-Sub had alluded.
"The Submarine Hunters" by Percy F. Westerman
The machine consists of several pulleys, a length of wire cable, and a rachet mechanism to give leverage.
"Agricultural Implements and Machines in the Collection of the National Museum of History and Technology" by John T. Schlebecker
John Rachet, the coroner of Chester ward, goes to him, and hears his confession.
"Rambles in an Old City comprising antiquarian, historical, biographical and political associations" by S. S. Madders
Then a lever clicked over a rachet, then another; and the auto began puffing regularly, and moved slowly out into the street.
"Edith and John" by Franklin S. Farquhar

In news:

Artists Name Favorite Rachet Songs.
2012 campaign enters a new phase, as Obama and Romney rachet up their attacks on each other.
She vows to stop being rachet on the show - look honey, only time will tell.
The third Rachet & Clank Future game is more of the same, but if it isn't broke, don't fix it.
Here's an idea: Spice things up by sprinkling in some reality and rachetness.

In science:

The speed of our protocol is truly determined by the tunneling amplitudes of the atoms and thus is much faster than the speed of the dynamics resulted from superexchange interaction in spin chains or renormalized tunnelings in AC-driven quantum rachets.
Coherent Directed Transport of Neutral Atoms in Unmodulated Optical Lattices
Directed transport in the absence of an external biased force in a periodic structure, known as rachet effect, usually depends on a dissipative process in the system .
Coherent Directed Transport of Neutral Atoms in Unmodulated Optical Lattices
Not only that our approach may serve as a potential avenue towards the explanation of non-stationary transport processes and rachet problems envisaged in various chemically and biologically interesting systems.
Nonequilibrium fluctuation induced escape from a metastable state