River of Spain (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">river of spain</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ebro that I've seen before include "foreign river" , "Border Hannibal crossed" , "that's streaming in Spain?" , "flower" , "European runner" .)