From the sense of ‘surrounding’ we get the Hindi word ‘aali’ which is the root of our Urdu word ‘sahaili’ meaning ‘friend of the bride’ because girlfriends sit ‘around’ the bride. ‘Sa’ is the prefix for ‘good’. This could be cognate with ‘saali’ (sister-in-law) and ‘saala’. The home of the father-in-law (sassur) is called ‘sassur-aal’. Lovers too are included, as in the bhajan ‘angana main ayay aali’. Here ‘aali’ is master (of home). In Sanskrit there are dozens of words for home, many of them indirect like ‘aal’. In the Urdu word ‘ghonsala’ (nest) there is ‘ghun’ (concealed) and ‘shala’ (home). A whole lot of them come from the sense of being ‘cut off’. Of that next time. Remnants of civilisation in the greater Bengal region date back four thousand years, when the region was settled by Dravidian, Tibeto-Burman, and Austro – Asiatic peoples. The exact origin of the word “Bangla” or “Bengal” is not known, though it is believed to be derived from Bang, the Dravidian-speaking tribe that settled in the area around the year 1000 BCE. The same is applies to the naming of Bangala desh or Bangadesh. There are various logic presented by various people of various disciplines.