a large ship specifically designed for transporting crude oil in bulk across the oceans.
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Origin of oil tanker
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for oil tanker
If there had been, a fellow couldn't be advertising her to the crew of an oil-tanker at high-noon, could he?
Usually it is only the drunks who come over the side of an oil-tanker singing, but this was no drunk.