'tomb' originates from Greek, specifically the word 'τύμβος' (tumbos), where 'τύμβος' meant 'mound' or 'burial mound'.

'τύμβος' transformed into the Latin word 'tumba', and eventually became the modern English word 'tomb' through Old French 'tombe'.

Initially, it meant 'a burial mound', but over time it evolved into its current meaning of 'a burial vault'.