The Collaborative International Dictionary of English v.0.48:
Plasterer \Plas"ter*er\, n. 1. One who applies plaster or mortar. "Thy father was a plasterer." --Shak. [1913 Webster] 2. One who makes plaster casts. "The plasterer doth make his figures by addition." --Sir H. Wotton. [1913 Webster]WordNet (r) 3.0 (2006):
plasterer n 1: a worker skilled in applying plaster