Day was one men overturned skip (5)
I believe the answer is:
robin
'day was one' is the definition.
(British broadcaster Robin Day)
'men overturned skip' is the wordplay.
'men' becomes 'OR' (military abbreviation for Other Ranks).
'overturned' shows that the letters should be reversed in order.
'skip' becomes 'bin' (both can mean a receptacle for rubbish).
'or' in reverse letter order is 'ro'.
'ro'+'bin'='ROBIN'
(Other definitions for robin that I've seen before include "Red-breasted songbird" , "Bird - one in Lincoln green?" , "Christmas songbird" , "See 12" , "Batman and --" .)