[noun] a line of text serving to indicate what the passage below it is about; "the heading seemed to have little to do with the text" Synonyms:header, head
[noun] the direction or path along which something moves or along which it lies Synonyms:bearing, aim
[noun] a horizontal (or nearly horizontal) passageway in a mine; "they dug a drift parallel with the vein" Synonyms:drift, gallery