Source : Webster's Revised Unabridged Dictionary (1913)

Kimono \Ki*mo"no\, n.; pl. {-nos}. [Jap.]
   1. A kind of loose robe or gown tied with a sash, worn as an
      outer garment by Japanese men and women.

   2. A similar gown worn as a dressing gown by women of Western
      nations.

Source : WordNet®

kimono
     n : a loose robe; imitated from robes originally worn by
         Japanese