Horse saddle disintegrated in cold washing solution (10)
I believe the answer is:
clydesdale
'horse' is the definition.
(Clydesdale is an example)
'saddle disintegrated in cold washing solution' is the wordplay.
'disintegrated' indicates anagramming the letters.
'in' is an insertion indicator.
'cold' becomes 'c' (eg on taps).
'washing solution' becomes 'lye' (I've seen this before).
'saddle' anagrammed gives 'desdal'.
'c'+'lye'='clye'
'desdal' going into 'clye' is 'CLYDESDALE'.
(Other definitions for clydesdale that I've seen before include "Powerful breed of horse" , "Heavy breed of draft horse from Scotland" , "Draught-horse" , "Breed of carthorse" .)