Rook, cold, dislodged slate (6)
I believe the answer is:
castle
'rook' is the definition.
(I know that rook can be written as castle)
'cold dislodged slate' is the wordplay.
'cold' becomes 'c' (eg on taps).
'dislodged' indicates anagramming the letters.
'slate' is an anagram of 'astle'.
'c'+'astle'='CASTLE'
(Other definitions for castle that I've seen before include "Big building" , "Imposing residence, perhaps fortified" , "the home of a Sassenach?" , "Move two pieces" , "Another word for chess rook" .)