drilling bit

Thesaurus

Noun

1.

drilling bit - a bit used in drilling for oil drill bitbit - the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press; "he looked around for the right size bit"core bit - a hollow drilling bit that is the cutting part of a core drill; allows core samples to be takenblade bit, fishtail bit - a drilling bit with cutting edges usually hardened against wearrock bit, roller bit - a drill bit that has hardened rotating rollers