Stand in line (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stand in line</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wait that I've seen before include "Hold on" , "Remain in expectation" , "Be patient" , "Delay, stand by" , "Attend, expect" .)
(Another definition for queue up that I've seen is " Form line when waiting".)