frost over

Từ điển WordNet v3.1 - WordNet Dictionary

verb

become covered with a layer of ice;
of a surface such as a window
- When the wings iced up, the pilot was forced to land his plane
• Syn:
ice up, ice over
• Hypernyms:
change
• Entailment:
freeze
• Verb Frames:
- Something ----s
- It is ----ing