druse

/D R UW1 Z/
noun
  1. 1

    An inner surface with a crust of tiny crystals.

  2. 2

    An aggregation of calcium oxalate crystals found in certain plants.

  3. 3

    A tiny yellow or white accumulation of extracellular material that builds up in Bruch's membrane of the eye.

Source: https://en.wiktionary.org/wiki/druse