from The American Heritage® Dictionary of the English Language, 4th Edition
- A mountain range of southwest Asia extending more than 805 km (500 mi) westward from northern Pakistan to northeast Afghanistan. It is crossed by several high-altitude passes used as invasion and trade routes since ancient times. The highest elevation is Tirich Mir, 7,695.2 m (25,230 ft), in Pakistan.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A mountain range in Afghanistan and Pakistan.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mountain range extending to the west of the Himalayas
From Persian هِندوکُش (Hendukuš) "Mountains of the Indus / of India". According to 19th century reports also interpreted a "Hindu-slayer" in popular etymology. Attested in English from the 18th century. (Wiktionary)