### Clue: Stir leading group on island beset by strong wind (9)
### Answer: GALVANISE 
 ### Explanation: Definition: Stir
 [ VAN(leading group;the foremost of a group of people, as in "he was in the van of the socialist movement") **plus**(on) IS(abbrev. for "island") ] **contained in**(beset by) GALE(a strong wind).