Bunk and a table (4)
I believe the answer is:
rota
'table' is the definition.
(thesaurus)
'bunk and a' is the wordplay.
'bunk' becomes 'rot' ('rot' can be a synonym of 'bunk').
'and' means one lot of letters go next to another.
'rot'+'a'='ROTA'
(Other definitions for rota that I've seen before include "Work schedule" , "List of people taking turns" , "List assigning turns of duty" , "List of duties to be done, or people to do them" , "Repetitious canon" .)