Khyber Pass

a narrow defile 33 m. long, in one place only 10 ft. wide, through not lofty but precipitous mountains; lies to the NW. of Peshawur, and is the chief route between the Punjab and Afghanistan; was the scene of a British catastrophe in the war of 1839-42, but has been repeatedly forced since, and since 1879 has been under British control.