Lineage is defined as the descendants of a common ancestor.(noun)
An example of lineage are people who all have the same common relative from 300 years ago.
See lineage in Webster's New World College Dictionary
Origin: ME linage < OFr lignage < ligne: see line
See lineage in American Heritage Dictionary 4
Origin: Middle English linage, lineage
Origin: , from Old French lignage
Origin: , from ligne, line; see line1.
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