roughcastPronunciation: /ˈrʌfkɑːst/Definition of roughcast noun [mass noun] plaster of lime, cement, and gravel, used on outside walls. adjective 1(of a building or part of a building) coated with roughcast. 2(of a person) lacking refinement:she thought of the roughcast yeomen she would meet verb (past and past participle roughcast) [with object] coat (a wall) with roughcast: the walls were roughcast as in an underground garageroughcast in other Oxford dictionaries Definition of roughcast in the US English dictionary
