'plains-dwelling' originates from the English words 'plain' and 'dwell,' where 'plain' refers to a large area of flat land and 'dwell' means 'to live or reside.'

'plains-dwelling' combines the words 'plain' and 'dwell,' which have been used in English since the Middle Ages, to describe living in flat, open areas.

Initially, it meant 'living in flat areas,' and this meaning has largely remained the same in modern usage.