Grab the woman's bottom! (6)
I believe the answer is:
nether
'bottom' is the definition.
('nether' can be similar in meaning to 'bottom')
'grab the woman's' is the wordplay.
'grab' becomes 'net' (netting is a kind of grabbing).
'the woman' becomes 'her' (**).
'net'+'her'='NETHER'
(Other definitions for nether that I've seen before include "North European country" , "Located below" , "Lower; Dutch '-lands'" , "These garments are for the bottom half" , "inferior" .)