heading

noun

• 1a title at the head of a page or section of a book:chapter headings
• a division or section of a subject; a class or category:this topic falls under four main headings

• 2a direction or bearing:he crawled on a heading of 90 degrees until he came to the track

• 3a horizontal passage made in preparation for building a tunnel.
• Mininganother term for drift (sense 4 of the noun).

• 4a strip of cloth at the top of a curtain above the hooks or wire that suspend the curtain.