See men without fruit (5)
I believe the answer is:
melon
'fruit' is the definition.
(type of fruit)
'see men without' is the wordplay.
'see' becomes 'lo' (archaic exclamation meaning 'look!').
'without' is an insertion indicator.
'lo' going into 'men' is 'MELON'.
(Other definitions for melon that I've seen before include "Edible gourd" , "Cantaloupe fruit" , "I'm very seedy" , "Sweet juicy gourd" , "Member of the gourd family" .)