roughcast

v. t.

  1. To form in its first rudiments, without revision, correction, or polish.
  2. To mold without nicety or elegance; to form with asperities and inequalities.
  3. To plaster with a mixture of lime and shells or pebbles; as, to roughcast a building.

n.

  1. A rude model; the rudimentary, unfinished form of a thing.
  2. A kind of plastering made of lime, with a mixture of shells or pebbles, used for covering buildings.