Indiarubber.

A substance made from the sap of various tropical plants, and used for erasing pencil marks, and many other purposes. Pronounce Indiʹrubber.

“He was a man with an indiarubber coat on, Indiarubber shoes, an indiarubber cap, and in his pocket an indiarubber purse, and not a cent in it.”—Cyclopœdia of American Biography (Charles Goodyear), vol. ii. p. 684.