A river, about1, 521 km(945 mi) long, rising in central British Columbia, Canada, and flowing east to Alberta then northeast to the Slave River near Lake Athabasca. It was long an important waterway for fur traders.

• 皮斯河一条约1，521公里（945英里）长的河流，起源于加拿大英属哥伦比亚省中部，向东流至艾伯塔后向东北注入阿萨巴斯卡湖附近的奴河，很久以来它一直是皮货商的重要水道