a utensil consisting of two pots, one of which fits partway into the other: water is boiled in the lower pot to cook or warm food or melt a substance in the upper.
[ 1875-80, Amer. ]
DOUBLE BOILER
Meaning of DOUBLE BOILER in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012