Source : Webster's Revised Unabridged Dictionary (1913)

Heading \Head"ing\, n.
   1. The act or state of one who, or that which, heads;
      formation of a head.

   2. That which stands at the head; title; as, the heading of a
      paper.

   3. Material for the heads of casks, barrels, etc.

   4. (Mining.) A gallery, drift, or adit in a mine; also, the
      end of a drift or gallery; the vein above a drift.

   5. (sewing) The extension of a line ruffling above the line
      of stitch.

   6. (Masonry) That end of a stone or brick which is presented
      outward. --Knight.

   {Heading course} (Arch.), a course consisting only of
      headers. See {Header}, n. 3
      (a) .

   {Heading joint}.
      (a) (Carp.) A joint, as of two or more boards, etc., at
          right angles to the grain of the wood.
      (b) (Masonry) A joint between two roussoirs in the same
          course.