산이나 극지방에서 눈이 쌓여 굳어진 뒤 자체 무게로 서서히 흘러내리는 거대한 얼음 덩어리.
A large, persistent body of dense ice that is constantly moving under its own weight, formed by the accumulation of snow over many years.
예문:
"The massive glacier carved deep valleys into the mountain range over thousands of years."
"Global warming is causing the glacier to retreat at an alarming rate."
"Scientists extracted ice cores from the glacier to study ancient atmospheric conditions."