Short-legged hound (6)
I believe the answer is:
basset
'short-legged hound' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for basset that I've seen before include "Short-legged hound that hunts hares" , "Type of horn" , "Type of hound" , "Beasts (anag.)" , "Sturdy hunting dog" .)