sprocket
SPROK-it · noun
ItalianEnglish
Origin
Sprocket first appears in English in the 16th century, but its exact origin is unknown. It may be connected to Italian words for spool or spur, or to English words like spoke, spike, and spur.
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Related words
It may share a root with English 'spoke' or 'spike', or with Italian words for spool ('rocchetto', 'spoletta') and spur ('sprone'), though none of this is certain.