What is "heading joint"

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, tunneling)

   1. A gallery, drift, or adit in a mine; the vein above a drift.

   2. The end of a drift or gallery; also, the working face at the end of a tunnel, gallery, drift, or adit from which the work is advanced.

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

   1. .

      Heading joint. (a) (Carp.) A joint, as of two or more boards, etc., at right angles to the grain of the wood.

   2. (Masonry) A joint between two roussoirs in the same course.