Bottle-washer's corpse found by hounds (8)
I believe the answer is:
dogsbody
'bottle-washer's' is the definition.
(both can mean a menial worker)
'corpse found by hounds' is the wordplay.
'corpse' becomes 'body' (I've seen this before).
'found by' says to put letters next to each other.
'hounds' becomes 'dogs' ('dog' can be a synonym of 'hound').
'body' after 'dogs' is 'DOGSBODY'.
(Other definitions for dogsbody that I've seen before include "Slave" , "One given menial tasks" , "Drudge" , "Person given menial tasks" , "General factotum" .)