'curler' originates from the English word 'curl,' which comes from the Middle English 'curlen,' meaning 'to form into ringlets or coils.'

'curlen' transformed into the modern English word 'curl,' and 'curler' was derived from this base word to describe both the device and the person involved in curling.

Initially, it meant 'to form into ringlets,' but over time it evolved to include the device used for curling hair and the person involved in the sport of curling.