Bĕt'ū-līne, n.
n. [Lat. betula, birch-tree.] (Chem.) A substance of a resinous nature obtained from the bark of the black birch (Betula nigra);—called also birch camphor.
n. [Lat. betula, birch-tree.] (Chem.) A substance of a resinous nature obtained from the bark of the black birch (Betula nigra);—called also birch camphor.