Type of musical instrument (6)
I believe the answer is:
string
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">type of musical instrument</span>' is the definition.<br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for string that I've seen before include "tier" , "Collectively, the racehorses trained at one stable" , "one of four on violin" , "Series of events" , "Hard to say how long a piece of it is" .)