A table constructed to hold fourth case (8)
I believe the answer is:
ablative
'case' is the definition.
(the ablative case in grammar)
'a table constructed to hold fourth' is the wordplay.
'constructed' indicates an anagram.
'to hold' means one lot of letters goes inside another.
'fourth' becomes 'iv'.
'table' with letters rearranged gives 'blate'.
'blate' going around 'iv' is 'blative'.
'a'+'blative'='ABLATIVE'
(Other definitions for ablative that I've seen before include "A case in grammar" , "Case in Latin denoting 'by' or 'with' the associated noun" .)