Iceberg
/ˈaɪsbərɡ/
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Definition
(noun) The seaward end of a glacier.
Sentence Examples
The passengers were asleep in their cabins when the ship hit a huge iceberg.
What you see above the water is just the tip of the iceberg.
CEFR Practice Quiz
The massive ____ was drifting slowly in the ocean, with most of its enormous size hidden below the surface.