Questions about example sentences with, and the definition and usage of "Glacial"

A: Glacial can mean an ice formation, very bitterly cold, or in some cases it can even mean very slow (like a glacier).
-A glacial winter wind chilled me as soon as I stepped outside. (bitterly cold)
-I could feel her glacial stare boring into the back of my head. (bitterly cold)
-He glanced at me with glacial indifference. (bitterly cold)
-New water sources are formed due to glacial movements. (ice formation)
-Glaciers around the world are melting. (ice formation)
-An official described progress in the project as glacial. (slow)