heading

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The title, subtitle, or topic that stands at the top or beginning, as of a paragraph, letter, or chapter.
• noun The course or direction in which a ship or aircraft is pointing or moving.
• noun A gallery or drift in a mine.
• noun The end of a gallery or drift.

from The Century Dictionary.

• noun The act or process of providing with a head: as, the heading of a pin or of a barrel.
• noun That which stands at the head; especially, a title; a caption: as, the heading of a paper.
• noun Material to form a head, as timber for forming the heads of casks.
• noun The foam on liquor.
• noun A preparation of equal parts of alum and green vitriol, used in brewing.
• noun In dressmaking: The upper edge of a flounce or ruffle which projects above the line stitched on the dress, etc.
• noun Any narrow braid or trimming placed at the head of a flounce, ruffle, fringe, or other trimming.
• noun In lace-making, the edge of the lace on the side sewed to the dress, whether as a part of the design or in the form of a separate braid.
• noun In fireworks, the particular device of a rocket, especially when used as a signal: as, a star-heading.
• noun A driftway or passage excavated in the line of an intended tunnel, forming a gullet in which the men work.
• noun In coal-mining:
• noun plural In placer-mining, the mass of gravel above the head of the sluice.
• noun In brickwork, a row or course of headers; a heading-course.
• noun The molding above a door or a window; a head-mold.
• noun Homespun cloth.
• noun See the extract.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act or state of one who, or that which, heads; formation of a head.
• noun That which stands at the head; title.
• noun Material for the heads of casks, barrels, etc.
• noun A gallery, drift, or adit in a mine; the vein above a drift.
• noun 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.
• noun (Sewing) The extension of a line ruffling above the line of stitch.
• noun (Masonry) That end of a stone or brick which is presented outward.
• noun (Arch.) a course consisting only of headers. See Header, n. 3 (a).
• noun (Carp.), (Masonry) A joint between two roussoirs in the same course.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb Present participle of head.
• noun The title or topic of a document, article, chapter etc.
• noun nautical The direction into which a seagoing or airborne vessel's bow is pointing (apparent heading) and/or the direction into which it is actually moving relative to the ground (true heading)

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the direction or path along which something moves or along which it lies
• noun a line of text serving to indicate what the passage below it is about
• noun a horizontal (or nearly horizontal) passageway in a mine