Dictionary.net

• A group of ungulate mammals including the hog and the hippopotamus. The term is also sometimes applied to the bears, and to certain passerine birds.

2010 - New Age Dictionary Database
By Oddity Software

• A group of ungulate mammals including the hog and the hippopotamus. The term is also sometimes applied to the bears, and to certain passerine birds.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.