1. a large mass of ice floating in the ocean, with most of its bulk underwater
2. something with a hidden or much larger part that is not immediately visible or apparent
Usage: figurative

Examples

• The Titanic sank after hitting an iceberg in the North Atlantic.
• Only about 10% of an iceberg is visible above water.
• Scientists study icebergs to understand climate change.
• The scandal was just the tip of the iceberg.
• Her anger was like an iceberg – what you saw was nothing compared to what lay beneath.
• Large icebergs can be dangerous to ships navigating Arctic waters.
• The corruption investigation revealed that the initial charges were only the tip of the iceberg.