Source : Webster's Revised Unabridged Dictionary (1913)

Front \Front\, n. [F. frant forehead, L. frons, frontis; perh.
   akin to E. brow.]
   1. The forehead or brow, the part of the face above the eyes;
      sometimes, also, the whole face.

            Bless'd with his father's front, his mother's
            tongue.                               --Pope.

            Grim-visaged war hath smoothed his wrinkled front.
                                                  --Shak.

            His front yet threatens, and his frowns command.
                                                  --Prior.

   2. The forehead, countenance, or personal presence, as
      expressive of character or temper, and especially, of
      boldness of disposition, sometimes of impudence; seeming;
      as, a bold front; a hardened front.

            With smiling fronts encountering.     --Shak.

            The inhabitants showed a bold front.  --Macaulay.

   3. The part or surface of anything which seems to look out,
      or to be directed forward; the fore or forward part; the
      foremost rank; the van; -- the opposite to back or rear;
      as, the front of a house; the front of an army.

            Had he his hurts before? Ay, on the front. --Shak.

   4. A position directly before the face of a person, or before
      the foremost part of a thing; as, in front of un person,
      of the troops, or of a house.

   5. The most conspicuous part.

            The very head and front of my offending. --Shak.

   6. That which covers the foremost part of the head: a front
      piece of false hair worn by women.

            Like any plain Miss Smith's, who wears s front.
                                                  --Mrs.
                                                  Browning.

   7. The beginning. ``Summer's front.'' --Shak.

   {Bastioned front} (Mil.), a curtain connerting two half
      bastions.

   {Front door}, the door in the front wall of a building,
      usually the principal entrance.

   {Front of fortification}, the works constructed upon any one
      side of a polygon. --Farrow.

   {Front of operations}, all that part of the field of
      operations in front of the successive positions occupied
      by the army as it moves forward. --Farrow.

   {To come to the front}, to attain prominence or leadership.

Source : WordNet®

front door
     n : exterior door (at the entrance) at the front of a building
         [syn: {front entrance}]