insūlāˈtion noun

1. Material which insulates or is a non-conductor of electricity
2. The process of insulating

inˈsūlātor noun

1. Someone who, or that which, insulates
2. A non-conductor of electricity
3. A device for insulating a conductor
4. A stand for a piano leg

insulating board noun (building)

Fibreboard of low density to reduce heat loss and give a degree of soundproofing

insulating tape noun (also (N American) friction tape)

A usu adhesive tape made from, or impregnated with, water-resistant insulating material, used for covering joins in electrical wires, etc