Ringlet (4)
'ringlet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tress that I've seen before include "Curl - lock" , "is a bit of a shock" , "Long piece of hair" , "Braid of hair" , "Long lock or plait of hair" .)
'ringlet' is the definition.
(I know that ringlet can be written as curl)
This is the entire clue.
(Other definitions for curl that I've seen before include "Spiral or coil" , "Coil, ringlet" , "Spiral shape" , "Hair piece; flick up" , "Twist (e.g. of hair)" .)