'peanut' originates from the combination of 'pea' and 'nut', where 'pea' referred to the legume and 'nut' to the seed.

'peanut' changed from the earlier term 'groundnut' and eventually became the modern English word 'peanut'.

Initially, it meant 'a type of legume', but over time it evolved to also mean 'a small amount of money'.