Part of speech: noun

An astringent mineral salt.

Share it on:

Usage examples "alum":

  1. I made another and larger one of stout drilling, soaked in lime- water and alum; and this was all that could be asked when put up properly on a frame. - "Woodcraft", George W. Sears.
  2. 12 Alum and its Sulphates............ - "The Dyeing of Woollen Fabrics", Franklin Beech.
  3. Pursuing our journey, at two miles above the falls we crossed a small stream which we named " Alum" creek, as it is strongly impregnated with alum. - "The Discovery of Yellowstone Park", Nathaniel Pitt Langford.