space bar

from WordNet (r) 3.0 (2006)

space bar
    n 1: the bar-shaped typewriter key that introduces spaces when
         used

from The Collaborative International Dictionary of English v.0.48

space bar \space bar\ or space key \space key\ (Mach.,
   Computers)
   A bar or key, in a typewriter, typesetting machine, or other
   keyboard (as a computer keyboard), used to insert a space
   between letters.
   [Webster 1913 Suppl. +PJC]

from The Free On-line Dictionary of Computing (8 July 2008)

space bar
space key

   <hardware> (Or "space key") The extra-wide {key} at the near
   edge of every {keyboard} that is used to enter a {space}
   character.

   In some {Graphical User Interfaces}, the space bar can be used
   to select the current item where the context does not allow
   text entry, e.g. when the {input focus} is on a {push button}
   or {tick box}.

   (2007-01-29)

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