Definitions

1. noun

A five-bar gate or a five-barred gate, a type of gate made with five horizontal bars, typically used in horse riding or cattle management.

“The farmer used a fivebar to secure the horse in the field.”

2. noun

In some aircraft, particularly gliders, a five-bar system is a device used to measure altitude.

“The fivebar on the glider indicated an altitude of 500 feet.”