Brick carrier finally buried under house (3)
I believe the answer is:
hod
'brick carrier' is the definition.
(I've seen this before)
'finally buried under house' is the wordplay.
'finally' indicates one should take the final letters.
'under' says to put letters next to each other.
'house' becomes 'ho' (abbreviation for house).
The final letter of 'buried' is 'd'.
'd' after 'ho' is 'HOD'.
(Other definitions for hod that I've seen before include "A bricklayer's carrying pole" , "A bricklayer carries bricks on it" , "Carrier for a bricklayer" , "Bricklaver's carrier of orthodox kind" , "Open trough for carrying bricks" .)