The foot hills in Himalaya, there are many duars. What is its meaning?

The foot hills in Bhutan and India known as Terai and the Duars (A Sanskrit word meaning "passes" or "gates"), which encompass 15–30 kilometres (9.3–18.6 mi) stretch of the foot hills and which are very fertile. Each Duar (with elevation varying from 100 metres (330 ft) to near sea level as they join the Brahmaputra river) is named after a stream or hemmed between two streams.

By: Ziyaur Rahman