noun
a rough or uncouth person, especially a worker in an oil field or on a drilling rig
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The roughneck on the oil rig worked tirelessly to ensure the drilling operations ran smoothly.
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Hey, have you met the roughneck who works on the construction site down the street?
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That roughneck over there is always causing trouble with his rowdy friends.
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In the world of finance, he was known as a roughneck for his aggressive investment strategies.