A small cylindrical object sometimes having a clamping attachment, around which hair is wound so as to produce curls; as, she slept all night with a head full of curlers.
4.
An electrical appliance with a handle and a metal rod-shaped tip which is heated and around which hair is wound, to produce curls in the hair; called also curling iron.
... hair was yellow stuff, and there was flour on his face and all over his stockings and shoes. There were big black smootches on his face, too. He had a can in one hand and a girls' curling iron in the other and a big greasy frying pan under ... — Roy Blakeley's Camp on Wheels • Percy Keese Fitzhugh