'hull' originates from Old English, specifically the word 'hulu' (or similar forms), where the root meant 'covering' or 'wrapper'.

'hulu' (Old English) developed into Middle English forms such as 'hul(e)' or 'hull', and eventually became the modern English word 'hull'.

Initially, it meant 'a covering or husk'; over time this sense remained for plant coverings and also extended metaphorically to mean the 'outer body' of a ship.