Stately tomb (9)
I believe the answer is:
mausoleum
'stately tomb' is the definition.
(building containing a tomb)
This is the entire clue.
(Other definitions for mausoleum that I've seen before include "Large, stately tomb" , "Great tomb - usual memo (anag)" , "Magnificent tomb or monument" , "Building with a tomb" , "Wonder of World tomb" .)