an animal that has horns on top of its head and long hair under its chin, and can climb steep hills and rocks. Goats live wild in the mountains or are kept as farm animals.——朗文当代大辞典

A domesticated browsing ruminant mammal, Capra aegagrus hircus, having backward-curving horns and typically a beard, kept worldwide for milk, wool, and meat. Also with distinguishing word to specify the breed.——牛津当代大辞典  @en