Miner dressed with anorak (4)
I believe the answer is:
nerd
'anorak' is the definition.
(I've seen this before)
'miner dressed with' is the wordplay.
'with' says the answer is hidden in the clue.
'NERD' is hidden in the letters of 'miner dressed'.
(Other definitions for nerd that I've seen before include "Flag on poles; wide (headline)" , "Geek, anorak (sl.)" , "one that's overly cerebral" , "Foolish or annoying person" , "Obsessive," .)