释义 |
pine-needle oil noun : an essential oil obtained from the needles and twigs of various pines or other conifers: as a. : the colorless or yellowish bitter aromatic oil from the mugho pine used chiefly in medicine as an expectorant and inhalant b. : the oil from the Siberian fir used chiefly in insecticides, soaps, and perfumes and as an inhalant |