windowsill

noun

Etymology: Etymology tree English window English sill English windowsill From window + sill.

1. The horizontal member protruding from the base of a window frame.

   “An upscale version of this tried and true method of providing windowsill humidity is the use of plastic 'egg crating' instead of gravel.”

   “You could tell summer was coming because people were drinking on the street, searching for spaces on the windowsills of the pub to balance their beerglasses.”