pinions; pinioned; pinioning
: to tie up (someone's arms or legs) very tightly
They pinioned his arms behind his back.
plural pinions
technical
: a small gear in a machine
a car with rack and pinion steering
Cite this Entry
“Pinion.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/pinion. Accessed 15 Apr. 2026.
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