Chaperone (6)
I believe the answer is:
escort
'chaperone' is the definition.
(I know that chaperone is a more specific form of escort)
This is the entire clue.
(Other definitions for escort that I've seen before include "Companion in corset, perhaps military" , "Person who accompanies or guards another" , "going in convoy" , "giving protection" , "Person(s) accompanying someone or something as protection" .)