blow great guns —(of wind) blow severely:
- The wind was blowing great guns but there was only the thinnest sprinkle of rain.
go great guns —(dated coll.) proceed or perform with great speed, skill, or success:
- You will then not only go great guns—move steadily forward—but also become big shots—important personages.
Cf.: great guns—persons of distinction or importance:
- They are great guns in the kitchen, but shrink to suitable dimensions in the presence of their betters.