n., adj., & v.
--n. plaster of lime and gravel, used on outside walls.
--adj.
1. (of a wall etc.) coated with roughcast.
2 (of a plan etc.) roughly formed, preliminary.
--v.tr. (past and past part. -cast)
1. coat (a wall) with roughcast.
2 prepare (a plan, essay, etc.) in outline.