'mountain-ash sugar' definitions:

Definition of 'mountain-ash sugar'

From: GCIDE
  • Sorbin \Sor"bin\, n. (Chem.) An unfermentable sugar, isomeric with glucose, found in the ripe berries of the rowan tree, or sorb, and extracted as a sweet white crystalline substance; -- called also mountain-ash sugar. [1913 Webster]