'smasher' originates from the English word 'smash', which comes from the Middle English 'smaschen', meaning 'to break into pieces'.

'smaschen' transformed into the modern English word 'smash', and 'smasher' was derived from it to denote someone or something that smashes.

Initially, it meant 'to break into pieces', but over time it evolved to also mean 'a very attractive or impressive person or thing'.