Table held up by barrister-at-law (5)
I believe the answer is:
altar
'table' is the definition.
(I know that altar is a type of table)
'held up by barrister-at-law' is the wordplay.
'up by' shows that the letters should be reversed in order.
'held' indicates the answer is hidden within the clue.
'ratla' is hidden within 'barrister at law'.
'ratla' in reverse letter order is 'ALTAR'.
(Other definitions for altar that I've seen before include "Communion table" , "Consecrated table in church" , "where sacrifices are made" , "Sacrifical stone sounds as if it will change" , "Part of church" .)