- Header File , a text file used in computer programming (especially in C or C++)
- Page Header , in printing or typography the material separated from the main body and appears at the top of a page
- A Lintel in building construction
- An electronic component which supplies a physical interface (usually a connector of some type) to a group of signal lines or PCB traces.
- Use of the player's head to deflect the ball in association football (soccer)
- A competitor in the Team Roping rodeo event who specializes in roping a steer's head
- A Herding Dog with a specific method of interacting with its flock
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