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WordNet
rock bit

n. a drill bit that has hardened rotating rollers [syn: roller bit]

Usage examples of "rock bit".

Cold rock bit through my nylons, and I sucked in the air, gasping, gagging at the choking smell of ash.

He was soaking wet from the waist downwards and both his knees had been badly bruised against the cliff wall: he was bitterly cold, drenched by heavy rain and the sheets of spray that broke continually over the ledge: the sharp edge of the rock bit cruelly into the calves of his legs, the tight rope constricted his breathing and he was still ashen-faced and exhausted from long hours of labour and seasickness: but when he spoke, it was with a voice of utter sincerity.

His sandals rasped upon cold stone, and the rock bit into the thin, sensitive skin of his thighs.

Pain exploded in his forearm, and a small rock bit his skull, bringing black back as the grass slipped from under his feet and, a second later, struck his shoulders.

We had had to put aside our mittens in order to find handholds, and the chill of the rock bit deep, so that we must press on as quickly as we could before any numbing of our fingers could bring about disaster.

The jagged rock bit into his legs and he shifted to a more comfortable position.