Secured hat, being windy (2,3,3)
I believe the answer is:
in the bag
'secured' is the definition.
(I've seen this before)
'hat being windy' is the wordplay.
'windy' indicates an anagram (windy suggests disruption).
'hat'+'being'='hatbeing'
'hatbeing' anagrammed gives 'IN THE BAG'.
(Other definitions for in the bag that I've seen before include "As good as done" , "Where you may find tea" , "to be packed, shopping" , "Informally secured as one wished" , "like cat incapable of ratting?" .)