'supertanker' definitions:
Definition of 'supertanker'
noun
The largest class of oil tankers
Definition of 'supertanker'
- Tank ship \Tank ship\, Tank vessel \Tank vessel\ . (Naut.)
A vessel fitted with tanks for the carrying of oil or other
liquid in bulk; -- called also tanker. A tank ship of very
large capacity is called a supertanker.
[Webster 1913 Suppl. +PJC]