River of Venezuela (7)
I believe the answer is:
orinoco
'river of venezuela' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for orinoco that I've seen before include "River of South America" , "River, rising in Venezuela, forming part of its border with Colombia and flowing into the Atlantic" , "South-American river" , "resident on Wimbledon Common" , "Colombia/Venezuela river" .)