A part for a man on the board (5)
I believe the answer is:
piece
This might be a double definition.
'a part' is the first definition.
(I know that part can be written as piece)
'man on the board' is the second definition.
'piece' can be an answer for 'man' (synonyms). I am unsure of the 'on the board' bit.
'for a' is the link.
Can you help me to learn more?
(Other definitions for piece that I've seen before include "constituent" , "Firearm -- collector's item" , "Unpleasant character" , "Fragment" , "artefact" .)