Digital protection (7)
'digital protection' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for thimble that I've seen before include "sewer cover?" , "Thumb thing" , "Protection for part of arm" , "Needlewoman's aid" , "Sewing tool" .)
(Other definitions for toenail that I've seen before include "woman in labour" , "Single-digit growth" , "Part of body perhaps painted" , "part of leg" , "such as met with in chiropody" .)