n. [ L. alburnus, fr. L. albus white. Cf. Auburn. ] (Zool.) The bleak, a small European fish having scales of a peculiarly silvery color which are used in making artificial pearls. [ 1913 Webster ]

a. Of or pertaining to alburnum; of the alburnum; as, alburnous substances. [ 1913 Webster ]

n. [ L., fr. albus white. ] (Bot.) The white and softer part of wood, between the inner bark and the hard wood or duramen; sapwood. [ 1913 Webster ]