Play or concert, eg (4)
I believe the answer is:
show
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">play</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">concert eg</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(concert is a kind of show)</span><br/ ><br/ ></span>
(Other definitions for show that I've seen before include "Demonstrate or reveal" , "Entertainment - guide" , "Labour's evidence for starting" , "programme" , "Demonstration" .)