noun \ˈpin-yən\

Definition of PINION

:  the terminal section of a bird's wing including the carpus, metacarpus, and phalanges; broadly :  wing
:  feather, quill; also :  flight feathers
pin·ioned \-yənd\ adjective

Origin of PINION

Middle English, probably modification of Anglo-French *empignon, enpenoun flight feathers, ultimately from Vulgar Latin *pinnion-, pinnio, from Latin pinna feather — more at pen
First Known Use: 15th century

Rhymes with PINION


transitive verb

: to tie up (someone's arms or legs) very tightly

Full Definition of PINION

a :  to disable or restrain by binding the arms
b :  to bind fast :  shackle
:  to restrain (a bird) from flight especially by cutting off the pinion of one wing

Examples of PINION

  1. They pinioned his arms behind his back.
  2. <Joan of Arc was pinioned to a stake and burned as a heretic.>

First Known Use of PINION




Definition of PINION

:  a gear with a small number of teeth designed to mesh with a larger wheel or rack
:  the smaller of a pair or the smallest of a train of gear wheels

Origin of PINION

French pignon, from Middle French peignon, from peigne comb, from Latin pecten — more at pectinate
First Known Use: 1659

Other Mechanical Engineering Terms

centrifuge, differential, flange, lathe, linchpin, plenum, ratchet, traction


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