Piece again introducing dance (6)
I believe the answer is:
bishop
'piece' is the definition.
(bishop is a kind of piece)
'again introducing dance' is the wordplay.
'again' becomes 'bis' (I've seen this in other clues).
'introducing' is a charade indicator (letters next to each other).
'dance' becomes 'hop' (hop is a kind of dance).
'bis'+'hop'='BISHOP'
(Other definitions for bishop that I've seen before include "See man at the top" , "whose moves cut across the rank and file" , "that, moving, must abandon his rank" , "He wears the mitre and carries the crozier" , "Head of a diocese" .)