Terribly pleased with wit's last column (8)
I believe the answer is:
pedestal
'column' is the definition.
(thesaurus)
'terribly pleased with wit's last' is the wordplay.
'terribly' is an anagram indicator.
'with' means one lot of letters goes inside another.
'last' says to take the final letters.
The last letter of 'wit' is 't'.
'pleased' with letters rearranged gives 'pedesal'.
'pedesal' enclosing 't' is 'PEDESTAL'.
(Other definitions for pedestal that I've seen before include "Desk drawer unit" , "Place for idol, or basin" , "Plinth, stand" , "Place for hero" , "Base for, eg, statue" .)