sangapenum: a variety of gum
gum: any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
plaster of paris: any of several gypsum cements; a white powder (a form of calcium sulphate) that forms a paste when mixed with water and hardens into a solid; used in making molds and sculptures and casts for broken limbs