iceberg
Pronunciation:
/ˈaɪsbɜːɡ//ˈaɪsbɝɡ/noun
Definitions
A huge mass of ocean-floating ice which has broken off a glacier or ice shelf
Example: The Titanic hit an iceberg and sank.
An aloof person.
(after an adjective) An impending disastrous event whose adverse effects are only beginning to show, in reference to one-tenth of the volume of an iceberg being visible above water.