Curling lock of hair (7)
I believe the answer is:
ringlet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">curling lock of hair</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 ringlet that I've seen before include "Curled lock of hair" , "sort of lock" , "A curl - kind of tingler" , "Handy device" , "Curl of hair; butterfly" .)