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Noun: roller bit
  1. A drill bit that has hardened rotating rollers
    - rock bit

Derived forms: roller bits

Type of: drill bit, drilling bit

Nearest

roll over
roll up
rollback
rolled
rolled biscuit
rolled into one
rolled oats
roller
roller bandage
roller bearing
roller bit
roller blind
roller coaster
roller skate
roller skating
roller towel
Rollerblade
rollerblader
rollerblading
roller-skater
rollick