Set of tables in fine study? (4)
I believe the answer is:
nest
'set of tables' is the definition.
(I've seen this before)
'in fine study?' is the wordplay.
'in' says the answer is hidden in the clue.
'NEST' is hidden in the letters of 'fine study'.
(Other definitions for nest that I've seen before include "Home of twigs, perhaps" , "Avian structure" , "10 [HOUSE]" , "Robin's home" , "Structure built by birds" .)