1. 
   windowsill
   [n] - the sill of a window
   Found op http://www.webdictionary.co.uk/definition.php?query=windowsill
   
   
2. 
   windowsill
   noun the sill of a window; the horizontal member at the bottom of the window frame
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=windowsill
   
   
3. 
   windowsill
   1) Sill 2) The sill of a window
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/windowsill/1
   
   

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