Entry 1 sense Webster, 1913 Abattoir /(ȧ`bȧt`twär")/ · A·bat·toir · IPA /ˈæb.əˌtwɑɹ/ 01 n. A public slaughterhouse for cattle, sheep, etc. pl. Abattoirs ((-twärz")) 1. A public slaughterhouse for cattle, sheep, etc.