The Collaborative International Dictionary of English v.0.48:

Forehead \Fore"head\ (?; 277), n.
   1. The front of that part of the head which incloses the
      brain; that part of the face above the eyes; the brow.
      [1913 Webster]

   2. The aspect or countenance; assurance.
      [1913 Webster]

            To look with forehead bold and big enough
            Upon the power and puissance of the king. --Shak.
      [1913 Webster]

   3. The front or fore part of anything.
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            Flames in the forehead of the morning sky. --Milton.
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            So rich advantage of a promised glory
            As smiles upon the forehead of this action. --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

forehead
    n 1: the part of the face above the eyes [syn: brow,
         forehead]
    2: the large cranial bone forming the front part of the cranium:
       includes the upper part of the orbits [syn: frontal bone,
       os frontale, forehead]