[{"Bold_text": "noun", "List Items": ["a whitish, translucent, crystalline, pleasant-odored terpene ketone, C10H16O, obtained from the camphor tree camphor tree,used chiefly in the manufacture of celluloid and in medicine as a counter-irritant for infections and in the treatment of pain and itching.", "any substance having medicinal or aromatic characteristics similar to those of camphor."]}]