Definition of header
1
: one that removes heads;
especially
: a grain-harvesting machine that cuts off the grain heads and elevates them to a wagon
2 a
: a brick or stone laid in a wall with its end toward the face of the wall
b
: a beam fitted at one side of an opening to support free ends of floor joists, studs, or rafters
c
: a horizontal structural or finish piece over an opening : lintel
d
: a conduit (such as an exhaust pipe for a many-cylindered engine) into which a number of smaller conduits open
e
: a mounting plate through which electrical terminals pass from a sealed device (such as a transistor)
3
: a fall or dive headfirst
- took a header into the pool
4
: a shot or pass in soccer made by heading the ball
