Possible Clues:

• In English, a decorative coating for the outside of buildings, though simply “plaster” in its original language
• Fine type of plaster
• “But you forget, sir, you only bought the property a year ago, and the ___ on your baronial castle is scarcely dry” (Pirates of Penzance)
• Stone face?
• Almost unable to shift firm plaster
• Fine plaster for ornamenting walls etc
• Unable to proceed, removing last firm plaster
• Plaster crops up on bed almost
• Fine plaster used on wall surfaces
• Plaster for walls and ceilings