### Clue: Pour egg on snow (11)
### Answer: PRECIPITATE 
 ### Explanation: Definition: Pour,egg on,snow
  I think it's a triple defn.  1st: Verb, as in "to rain,pour"; 2nd: Verb, to cause to happen, as in "to precipitate an action";  3rd:  Noun, that which falls, eg. snow.  I spent a long time trying to work it out as a cryptic clue, then a cryptic definition, then a double definition, and can only conclude (rightfully I hope) that it's a triple definition.