Carrier starts to haul out debris (3)
I believe the answer is:
hod
'carrier' is the definition.
(I've seen this before)
'starts to haul out debris' is the wordplay.
'starts to' indicates taking the first letters.
The first letters of 'haul out debris' is 'HOD'.
(Other definitions for hod that I've seen before include "Trough on pole for carrying bricks" , "Brickie's carrier" , "Open trough for carrying bricks" , "Carrier for bricks" , "Coal scuttle" .)