Other forms: icebergs
An iceberg is the floating ice mountain that hides most of itself underwater. Strike an iceberg, a huge iceberg, the tip of the iceberg.
Roughly nine tenths sits below the surface, which is where the phrase about the tip comes from, and that hidden bulk is why they are so dangerous to ships. They calve from glaciers and are made of fresh water. The name came from Dutch and means ice mountain.
1nounicebergA large mass of floating ice.
“The Titanic sank after hitting an iceberg in 1912.”
iceberg is a mass of ice.
From Dutch ijsberg, ice mountain. It first named a glacier seen from a ship.
Middle Dutch
ijsberch
English, today
iceberg
From ijsberg. ijsberg (compound of ijs + berg), from Middle Dutch ijsberch. First used to describe a glacier as seen at a distance from a ship then used as a term to describe the floating chunks of ice broken off from such glaciers. Cognate to German Eisberg, Danish isbjerg, Norwegian isberg and Swedish isberg. Figurative senses in reference to the fact that only one-tenth of an iceberg is usually visible above water.
Etymology from Wiktionary, CC BY-SA