noun
sprocket
Mechanical component: a toothed wheel that engages with a chain or track, used in bicycles, motorcycles, tanks, and industrial machinery.
自転車のスプロケットを交換したら、ペダルが軽くなった。
After I replaced the bicycle's sprocket, pedaling became lighter.
この機械のスプロケットは定期的
The sprockets on this machine need regular lubrication.