The Collaborative International Dictionary of English v.0.48:

Zephyr \Zeph"yr\, n. [L. zephyrus, Gr. ?, akin to ? darkness,
   the dark side, west: cf. F. z['e]phyr.]
   The west wind; poetically, any soft, gentle breeze. "Soft the
   zephyr blows." --Gray.
   [1913 Webster]

         As gentle
         As zephyrs blowing below the violet.     --Shak.
   [1913 Webster]

   Zephyr cloth, a thin kind of cassimere made in Belgium;
      also, a waterproof fabric of wool.

   Zephyr shawl, a kind of thin, light, embroidered shawl made
      of worsted and cotton.

   Zephyr yarn, or Zephyr worsted, a fine, soft kind of yarn
      or worsted, -- used for knitting and embroidery.
      [1913 Webster]

WordNet (r) 3.0 (2006):

zephyr
    n 1: a slight wind (usually refreshing); "the breeze was cooled
         by the lake"; "as he waited he could feel the air on his
         neck" [syn: breeze, zephyr, gentle wind, air]
    2: (Greek mythology) the Greek god of the west wind