### Clue: What one might do on a windy day to test opinion (3,1,4)
### Answer: FLY A KITE 
 ### Explanation: Definition: What one might do on a windy day to test opinion
 Double defn: What one might do: 1st: on a windy day, literally; and 2nd: taken metaphorically, to test opinion/to put out feelers to gauge the potential response to an action considered for the future.