Hot comb
A metal comb heated on a stove or electrically and pulled through hair to straighten it.
Also: pressing comb, press and curl
A hot comb, or pressing comb, is a metal comb heated on a stove or electrically and pulled slowly through sections of hair to straighten it. It was widely used on Black women's hair in the United States from the early 20th century, often followed by curling irons in a style called a press and curl. Pressing was a weekly ritual in many homes and kitchens. The silk press is its modern descendant, using a flat iron.