knurled

/nɜrld/
adjective
  1. Having a surface covered with a series of small ridges or bumps, usually to provide a better grip.
    • The knurled surface of the metal bar prevented it from slipping out of the machine's clamp.
    • The knurled handle of the screwdriver made it easy to turn even with wet hands.
    • She gripped the knurled knob on the old radio and twisted it to change the station.
Antonyms
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