The Collaborative International Dictionary of English v.0.48:
Slaughterhouse \Slaugh"ter*house`\, n. A house where beasts are butchered for the market. [1913 Webster]WordNet (r) 3.0 (2006):
slaughterhouse n 1: a building where animals are butchered [syn: abattoir, butchery, shambles, slaughterhouse]