Mesh covers the woman's bottom! (6)
I believe the answer is:
nether
'bottom' is the definition.
('nether' can be similar in meaning to 'bottom')
'mesh covers the woman's' is the wordplay.
'mesh' becomes 'net' ('net' can be a synonym of 'mesh').
'covers' says to put letters next to each other.
'the woman' becomes 'her' (**).
'net'+'her'='NETHER'
(Other definitions for nether that I've seen before include "Subordinate" , "These regions are hell, the underworld" , "Situated below" , "These regions are beneath" , "North European country" .)