Variegated, having piebald parts (4)
I believe the answer is:
pied
'variegated' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pied that I've seen before include "With patches coloured differently" , "featuring two colours" , "in various colours" , "varying in colour" , "black and white" .)