camphor

a resin obtained from the camphor tree; used in making celluloid and liniment

A tough, white, aromatic resin, or gum, obtained from different species of the Laurus family, esp. from Cinnamomum camphora (the Laurus camphora of Linnæus.). Camphor, C₁₀H₁₆O, is volatile and fragrant, and is used in medicine as a diaphoretic, a stimulant, or sedative.