Hourglass figure? (4)
I believe the answer is:
time
'hourglass figure?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for time that I've seen before include "'Every ... we say goodbye, I cry a little' /Cole Porter" , "Duration; tempo" , "Prison sentence; occasion" , "Continuum of past, present and future" , "Great healer, so they say" .)