heading

n. 1. The act or state of one who, or that which, heads; formation of a head. [ 1913 Webster ]

2. That which stands at the head; title; as, the heading of a paper. [ 1913 Webster ]

3. Material for the heads of casks, barrels, etc. [ 1913 Webster ]

4. (Mining, tunneling) (a) A gallery, drift, or adit in a mine; the vein above a drift. (b) 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. [ 1913 Webster +RH ]

5. (Sewing) The extension of a line ruffling above the line of stitch. [ 1913 Webster ]

6. (Masonry) That end of a stone or brick which is presented outward. Knight. [ 1913 Webster ]

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. [ 1913 Webster ]