Source : Webster's Revised Unabridged Dictionary (1913)

   {Window frame}, the frame of a window which receives and
      holds the sashes or casement.

   {Window glass}, panes of glass for windows; the kind of glass
      used in windows.

   {Window martin} (Zo["o]l.), the common European martin.
      [Prov. Eng.]

   {Window oyster} (Zo["o]l.), a marine bivalve shell ({Placuna
      placenta}) native of the East Indies and China. Its valves
      are very broad, thin, and translucent, and are said to
      have been used formerly in place of glass.

   {Window pane}.
      (a) (Arch.) See {Pane}, n., 3
      (b) .
      (b) (Zo["o]l.) See {Windowpane}, in the Vocabulary.

   {Window sash}, the sash, or light frame, in which panes of
      glass are set for windows.

   {Window seat}, a seat arranged in the recess of a window. See
      {Window stool}, under {Stool}.

   {Window shade}, a shade or blind for a window; usually, one
      that is hung on a roller.

   {Window shell} (Zo["o]l.), the window oyster.

   {Window shutter}, a shutter or blind used to close or darken
      windows.

   {Window sill} (Arch.), the flat piece of wood, stone, or the
      like, at the bottom of a window frame.

   {Window swallow} (Zo["o]l.), the common European martin.
      [Prov. Eng.]

   {Window tax}, a tax or duty formerly levied on all windows,
      or openings for light, above the number of eight in houses
      standing in cities or towns. [Eng.]

Source : WordNet®

Placuna placenta
     n : marine bivalve common in Philippine coastal waters
         characterized by a large thin flat translucent shell
         [syn: {window oyster}, {windowpane oyster}, {capiz}]