SPROCKET

Tooth on the rim of a driving wheel (8)

Solution has appeared in 3 crosswords (2 across and 1 down):

• Quick crossword No 16,347 — 2022-09-27 23:00:50
  17A: Tooth on a gear wheel (8)
• Quick crossword No 15,959 — 2021-06-30 23:00:52
  9A: Wheel with projections on its rim that pull things through (8)
• Quick crossword No 15,369 — 2019-08-09 23:00:02
  12D: Tooth on the rim of a driving wheel (8)