Definitions:

1. A large piece of freshwater ice that has broken off from a glacier or ice shelf and floats freely in open water. NOUN
   • The massive iceberg slowly drifted southward, gradually melting as it entered warmer waters.
2. Large piece of freshwater ice mostly found in polar regions, particularly near Greenland and Antarctica where vast glaciers and ice shelves produce these floating masses. NOUN
   • Scientists study icebergs to understand climate change, as their melting patterns reflect ocean temperatures.

Synonyms:

• berg
• frozen water
• glacial mass
• Ice sheet