River rising in Tibet (5)
I believe the answer is:
indus
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">river rising in tibet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for indus that I've seen before include "South Asian river" , "Pakistani river" , "Asian runner" , "Major Asian river" , "River of India and Pakistan" .)