n. A thin balsam or wood oil derived from the Diptcrocarpus lævis, an East Indian tree. It is used in medicine, and as a substitute for linseed oil in the coarser kinds of paint. [ 1913 Webster ]
‖ /mhw>, n. [ Hind. gurū a spiritual parent or teacher, Skr. guru heavy, noble, venerable, teacher. Cf. Grief. ] 1. A spiritual teacher, guide, or confessor among the Hindus; a guru. Malcom. [ 1913 Webster ]
2. def>one who has expert knowledge of a technical area and serves as an advisor to others; an expert and teacher. Usually written guru. [ PJC ]
3. def>an intellectual or spiritual guide or advisor; a mentor. Usually written guru. [ PJC ]