Miniseries based on a Haley novel (5)
I believe the answer is:
roots
'miniseries based on a haley novel' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for roots that I've seen before include "a Wesker play" , "background" , "Supports" , "Underground parts of a plant" , "To find ancestry" .)