Lineage, descent (8)
I believe the answer is:
ancestry
I believe this is a double definition.
'lineage' is the first definition.
(synonyms)
'descent' is the second definition.
(I know that descent can be written as ancestry)
(Other definitions for ancestry that I've seen before include "Any crest (anag.)" , "Blood line" , "Person's ethnic descent" , "Lineage" , "Genealogy" .)