sprocket

US /ˈsprɑː.kɪt ˌwiːl/
UK /ˈsprɑː.kɪt ˌwiːl/
"sprocket" picture
1.

piñón, rueda dentada

a toothed wheel that engages with a chain, track, or other perforated material

:
The bicycle chain runs over the sprocket.
La cadena de la bicicleta pasa por el piñón.
The tank's track is driven by a large sprocket.
La oruga del tanque es impulsada por un gran piñón.