Meaning of INSULATOR in English

INSULATOR

noun Date: 1801 one that insulates: as, a material that is a poor conductor (as of electricity or heat), a device made of an electrical insulating material and used for separating or supporting conductors

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.