From Longman Dictionary of Contemporary Englishfamily treeˌfamily ˈtree noun [countable] SSFFAMILYa drawing that gives the names of all the members of a family over a long period of time, and shows how they are related to each other → genealogy
Examples from the Corpus
family tree• Her family tree included a former prime minister and the governor of Tokyo.• This system is known as cadency and marks the relationships of the cadet branches to the principal family tree.• Sir Walter Scott once said he was honoured to be a mere twig on the Swinton family tree.• Perhaps you can give me some help on the family tree.• The Arellanos have drug smuggling in their family tree. 