Barrel strip (5)
I believe the answer is:
stave
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">barrel strip</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 stave that I've seen before include "Delay before off" , "Stanza of a poem" , "System of five horizontal lines in written music" , "Musical staff" , "Set of lines on which musical notes are written" .)