Also found in: Thesaurus, Encyclopedia.
1. A coarse plaster of lime, shells, and pebbles used for outside wall surfaces.
2. A rough preliminary model or form.
tr.v. rough·cast, rough·cast·ing, rough·casts
1. To plaster (a wall, for example) with roughcast.
2. To shape or work into a rough or preliminary form.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.