Clothing articles dropped by Boadicea (6)
I believe the answer is:
bodice
'clothing' is the definition.
(bodice is a kind of clothing)
'articles dropped by boadicea' is the wordplay.
'articles' becomes 'aa' (two instances of 'a', the indefinite article).
'dropped by' suggests deleting specific letters.
'boadicea' with 'aa' taken out is 'BODICE'.
(Other definitions for bodice that I've seen before include "Upper part of female dress, shoulder to waist" , "Historical novel with lots of passion" , "Close-fitting top of a dress" , "Tight clothing" , "Spencer" .)