header (n.)horizontal beam used as a finishing piece over a door or window;
header (n.)brick that is laid sideways at the top of a wall;
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;
header (n.)a machine that cuts the heads off grain and moves them into a wagon;
header (n.)(soccer) the act of hitting the ball with your head;
header (n.)a headlong jump (or fall);
he took a header into the shrubbery
header (n.)a line of text serving to indicate what the passage below it is about;
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