'wall' originates from Latin, specifically the word 'vallum', where 'vallum' meant 'rampart' or 'fortification'.

'vallum' transformed into the Old English word 'weall', and eventually became the modern English word 'wall'.

Initially, it meant 'a fortification or rampart', but over time it evolved into its current meaning of 'a vertical structure that divides or encloses an area'.