definition of
header

[1] #1 header n. [heading, 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] #2 header n. [lintel] horizontal beam used as a finishing piece over a door or window. wn

[3] #3 header n. [coping, cope] brick that is laid sideways at the top of a wall. wn

[4] #4 header n. a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafters. wn

[5] #5 header n. a machine that cuts the heads off grain and moves them into a wagon. wn