The most common and most likely answer to this crossword clue is the 4 letter word EBRO
I've seen this crossword clue in Financial Times
E
B
R
O
More clues leading to the result EBRO
- River flowing through the Broads
- It flows between the banks of a city near Jerusalem
- Ebbing in Windsor, beautiful river
- River bore surging
- Spanish runner featuring in outside broadcast
- Current Iberian globe rotated, showing Spain at front
- River, part of the Broads
- The Bronx’s river
- Perhaps mate online that’s streaming in Spain?
- Spanish river‘s swirling bore
Buddy explains!
The straight part
We know that "river" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case river = ebro.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.