glacier
US /ˈɡleɪ.ʃɚ/
UK /ˈɡleɪ.ʃɚ/

1.
geleira
a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles
:
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The massive glacier slowly carved out the valley over millennia.
A enorme geleira esculpiu lentamente o vale ao longo de milênios.
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Climate change is causing many glaciers to melt at an alarming rate.
As mudanças climáticas estão fazendo com que muitas geleiras derretam a uma taxa alarmante.