One of di 37 small boxes wey get number for di rotor. Dem also dey call am: slot, cup.
For context
FretsequipmentFretDi metal wey divide two pockets for di wheel.Read di whole tin → dey separate pockets; how deep di pocket be and how high di fret be dey decide how much di ballequipmentBallDi small ball wey dem dey throw for di track against di rotor. Modern balls na ivorine or Teflon, 18–21 mm.Read di whole tin → go bounce before e settle. How many pockets roulette wheel get depend on di type.
Professional wheels get pockets wey dem cut from one single piece of metal so no pocket fit deep pass anoda one, wey be di classic cause of bias for wooden wheels.