Exam (4)
I believe the answer is:
test
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exam</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for test that I've seen before include "water flowing through Hampshire" , "Sample" , "Analyse" , "type of examination" , "big game" .)