African river flowing into the Indian Ocean (7)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
zambezi
(Other definitions for zambezi that I've seen before include "Zambia/Zimbabwe border river" , "River of southeast Africa" , "Southern African river" , "African river, flowing into the Indian Ocean" , "Maze biz (anag.); African river" .)