CAMPHOR

noun Etymology: Middle English caumfre, from Anglo-French, from Medieval Latin ~a, from Arabic kāfūr, from Malay kapur Date: 14th century a tough gummy volatile aromatic crystalline compound C 10 H 16 O obtained especially from the wood and bark of the ~ tree and used as a liniment and mild topical analgesic in medicine, as a plasticizer, and as an insect repellent, ~aceous adjective