from The American Heritage® Dictionary of the English Language, 4th Edition
- A narrow pass, about 53 km (33 mi) long, through mountains on the border between eastern Afghanistan and northern Pakistan. It has long been a strategic trade and invasion route. The highest point of the pass is about 1,068 m (3,500 ft).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mountain pass of great strategic and commercial value in the Hindu Kush on the border between northern Pakistan and western Afghanistan; a route by which invaders entered India
Sorry, no etymologies found.
At this point, Alexander divided his army in two and sent Hephaestion with a considerable force along the relatively easy road east across the Khyber Pass with orders to subdue rebellious tribes along the way, and most important, to reach the Indus River as quickly as possible and build a bridge, as he had at the Euphrates, for the rest of the army to cross.