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pinion

   Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia 0.02 sec.
pinion1
1. Chiefly poetic a bird's wing
2. the part of a bird's wing including the flight feathers

pinion2
a cogwheel that engages with a larger wheel or rack, which it drives or by which it is driven

pinion [′pin·yən]
(mechanical engineering)
The smaller of a pair of gear wheels or the smallest wheel of a gear train.
(vertebrate zoology)
The distal portion of a bird's wing.


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Never seraph spread a pinion Over fabric half so fair.
Every one of those knots he has made himself and could loosen himself; not one of them would have been made by an enemy really trying to pinion him.
From the end of the axis which is next the car, proceeds a shaft of steel, connecting the screw with the pinion of a piece of spring machinery fixed in the car.
 
 
 
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