Go, flow (4)
I believe the answer is:
pass
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">go</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that go can be written as pass)</span><br/ ><br/ >'<span class="explanation-format__original">flow</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for pass that I've seen before include "Exceed; go by" , "Ratify for saps" , "good performance by exam candidate" , "Go by; succeed in (an exam)" , "Narrow route through high mountain, like the Khyber" .)