This lady's going to Hull (5)

I believe the answer is:

shell

'hull' is the definition.
(shell is a kind of hull)

'this lady's going to' is the wordplay.
'this lady' becomes 'she' (I've seen this before).
'going to' becomes 'll' (as in he'll, we'll etc).
'she'+'ll'='SHELL'

(Other definitions for shell that I've seen before include "Something used instead of money" , "Hard protective case" , "Mortar missile" , "Carapace; bombard" , "See 18" .)

I've seen this clue in The Guardian.

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