Dictionary.net

• of pets; trained to urinate and defecate outside or in a special place; "housebroken pets"; "`house-trained' is chiefly British"

2006 - WordNet 3.0
By Princeton University

• of pets; trained to urinate and defecate outside or in a special place; "housebroken pets"; "`house-trained' is chiefly British"

2011 - English Dictionary Database
By DataStellar Co., Ltd