verb (used with object), thrust, thrusting.
to push forcibly; shove; put or drive with force: He thrust his way through the crowd. She thrust a dagger into his back.
to put boldly forth or impose acceptance of: to thrust oneself into a conversation between others; to thrust a dollar into the waiter's hand.
to extend; present: He thrust his fist in front of my face.
Archaic. to stab or pierce, as with a sword: She thrust his back with a dagger.
verb (used without object), thrust, thrusting.
to push against something.
to push or force one's way, as against obstacles or through a crowd.
to make a thrust, lunge, or stab at something.
an act or instance of thrusting; a forcible push or shove; lunge or stab.
a lunge or stab, as with a sword.
Mechanics. a linear reactive force exerted by a propeller, propulsive gases, etc., to propel a ship, aircraft, etc.
Geology. a compressive strain in the crust of the earth that, in its most characteristic development, produces reverse or thrust faults.
the main point, purpose, or essence: The thrust of his speech was an urgent appeal for votes.
Machinery. a pushing force or pressure exerted by a thing or a part against a contiguous one.
Architecture. the downward and outward force exerted by an arch on each side.
an organized military attack; assault; offensive.

1125–75; Middle English thrusten, thrysten (v.) < Old Norse thrȳsta to thrust, force, press

counterthrust, noun
prethrust, noun, verb (used with object), prethrust, prethrusting.
unthrust, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
thrust (θrʌst)
vb (foll by through) (foll by at) , thrusts, thrusting, thrust
1.  (tr) to push (someone or something) with force or sudden strength: she thrust him away; she thrust it into the fire
2.  (tr) to force or impose upon (someone) or into (some condition or situation): they thrust extra responsibilities upon her; she was thrust into the limelight
3.  to pierce; stab
4.  (intr; usually foll by through or into) to force a passage or entrance
5.  (intr) to push forwards, upwards, or outwards
6.  to make a stab or lunge at (a person or thing)
7.  a forceful drive, push, stab, or lunge
8.  a force, esp one that produces motion
9.  a.  a propulsive force produced by the fluid pressure or the change of momentum of the fluid in a jet engine, rocket engine, etc
 b.  a similar force produced by a propeller
10.  a pressure that is exerted continuously by one part of an object, structure, etc, against another, esp the axial force by or on a shaft
11.  geology
 a.  the compressive force in the earth's crust that produces recumbent folds and thrust or reverse faults
 b.  See thrust fault
12.  civil engineering a force exerted in a downwards and outwards direction, as by an arch or rafter, or the horizontal force exerted by retained earth
13.  force, impetus, or drive: a man with thrust and energy
14.  the essential or most forceful part: the thrust of the argument
[C12: from Old Norse thrysta; related to Latin trūdere; see intrude]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1175, from O.N. þrysta "to thrust, force," from P.Gmc. *thrustijanan, perhaps from PIE *trud- "push, press" (see threat), but OED finds this derivation doubtful. The noun is recorded from 1513; fig. sense of "principal theme, aim, point, purpose" is recorded from 1968.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
thrust   (thrŭst)  Pronunciation Key 
The force that propels an object in a given direction, especially when generated by the object itself, as by an engine or rocket.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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