sa·ga /ˈsɑgə ||ˈsæ-/
  傳說,英雄事蹟,冒險故事
  Sa·ga n.; pl. Sagas   A Scandinavian legend, or heroic or mythic tradition, among the Norsemen and kindred people; a northern European popular historical or religious tale of olden time.
  And then the blue-eyed Norseman told
  A saga of the days of old.   --Longfellow.
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  Sa·gum n.; pl. Saga   Rom. Antiq. The military cloak of the Roman soldiers.
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  saga
       n : a narrative telling the adventures of a hero or a family;
           originally (12th to 14th centuries) a story of the
           families that settled Iceland and their descendants but
           now any prose narrative that resembles such an account