chainring

UK/ˈt͡ʃeɪnɹɪŋ/US/ˈt͡ʃeɪnɹɪŋ/

nounC1Very rare — outside the 30,000 commonest English words, so you will meet it in writing rather than in speechToo rare in one of the two pools to compare — fewer than 20 uses in speech or in writing

Other forms: chainrings

The chainring is the toothed wheel the chain runs over at the front. A fifty-tooth chainring.

Its size against the sprocket at the back is what decides the gear. A worn chainring will throw the chain off under any real pressure.

Definitions of chainring

1nounchainringThe toothed wheel the chain runs over at the front.C1
“He fitted a smaller chainring for the hills.”

chainring is a part.

Where it comes from

Chain plus ring. The teeth are cut in odd shapes on a modern chainring so that the chain lifts onto the next ring only at the one point where it will catch cleanly.

From chain + ring.

Etymology from Wiktionary, CC BY-SA

Practised in Cycling

Practise this word

chainring in the wild

The inner level was driven by the chainring and the outer drove the rear cog.
Simpson chain
Instead of teeth, the chainring and cog had grooves into which the rollers of the chain engaged.
Simpson chain
SRAM was also the first to release a dedicated "one by" drivetrain with a single front chainring for road bikes.
SRAM Corporation
Biopace chainrings have a reduced chainring diameter coinciding with the cranks being horizontal.
Biopace
Bicycles without a straight chainline are slightly less efficient due to frictional losses incurred by running the chain at an angle between the front chainring and rear sprocket.
Chainline

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From Wikipedia, CC BY-SA 4.0. These sentences were written by other people about their own subjects; they are here to show the word at work, not as anybody’s opinion.

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