(1):

(n.) A kind of plastering made of lime, with a mixture of shells or pebbles, used for covering buildings.

(2):

(v. t.) To plaster with a mixture of lime and shells or pebbles; as, to roughcast a building.

(3):

(n.) A rude model; the rudimentary, unfinished form of a thing.

(4):

(v. t.) To form in its first rudiments, without revision, correction, or polish.

(5):

(v. t.) To mold without nicety or elegance; to form with asperities and inequalities.