Town crier's shout (4)
I believe the answer is:
oyez
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">town crier's shout</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oyez that I've seen before include "Town crier's call (Z, not S)" , "Hear this" , "Pay attention" , "Cry of the old town crier" , "Town crier's 'Attention!'" .)