1. a large mass of ice that moves slowly down a mountain or across land

Examples

• The glacier carved deep valleys as it moved through the mountains.
• Climate change is causing many glaciers to melt rapidly.
• We hiked to the edge of the glacier to see the blue ice.
• The glacier advanced and retreated over thousands of years.
• Scientists study glaciers to understand past climate conditions.
• Chunks of ice broke off from the glacier into the ocean.
• The massive glacier covered the entire valley floor.