Corpulent women will hide the figure (3)
I believe the answer is:
two
'the figure' is the definition.
(two is a number)
'corpulent women will hide' is the wordplay.
'hide' indicates the answer is hidden within the clue.
'TWO' can be found hidden inside 'corpulent women will'.
(Other definitions for two that I've seen before include "Company allegedly" , "Number of faces of the god Janus" , "Even number" , "Figure" , "prime -- that's not odd" .)