1.
the state of being isolated or detached
the insulation of England was preserved by the English Channel
2.
a material that reduces or prevents the transmission of heat or sound or electricity
3.
the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity
No other animal gives us more by-products than the hog. These by-products include pig suede, buttons, glass, paint brushes, crayons, chalk, and insulation to name a few.