HyperDic: rock_bit

English > 1 sense of the expression rock bit:
NOUNartifactrock bit, roller bita drill bit that has hardened rotating rollers
English > rock bit: 1 sense > noun 1, artifact
MeaningA drill bit that has hardened rotating rollers.
Synonymroller bit
Broaderdrilling bit, drill bitA bit used in drilling for oil

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