an·ces·tral /ænˈsɛstrəl/
  (a.)祖先的,祖傳的
  An·ces·tral a. Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate. “Ancestral trees.”
  ◄ ►
  ancestral
       adj 1: inherited or inheritable by established rules (usually legal
              rules) of descent; "ancestral home"; "ancestral lore";
              "hereditary monarchy"; "patrimonial estate";
              "transmissible tradition" [syn: hereditary, patrimonial,
               transmissible]
       2: of or belonging to or inherited from an ancestor