Miner has no right to dog (6)
I believe the answer is:
collie
'to dog' is the definition.
(collie is a kind of dog)
'miner has no right' is the wordplay.
'miner' becomes 'collier' (collier is a kind of miner).
'has no' is a deletion indicator.
'right' becomes 'r' (common abbreviation).
'collier' with 'r' taken away is 'COLLIE'.
(Other definitions for collie that I've seen before include "Sheep-herding dog" , "Working animal" , "Silky-coated sheepdog" , "Breed of sheepdog" , "Sheepdog wth ling nose and shaggy hair" .)