Place in a TV lineup (4)
I believe the answer is:
slot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">place in a tv lineup</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for slot that I've seen before include "Space for inserting coin" , "Scheduled time -- aperture for coins" , "Long narrow slit" , "Hole for money" , "Long narrow opening" .)