#1 heading n. [header, head] 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". wn
#2 heading n. [bearing, aim] the direction or path along which something moves or along which it lies. wn
#3 heading n. [drift, gallery] a horizontal (or nearly horizontal) passageway in a mine; "they dug a drift parallel with the vein". wn
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