Token gesture (4)
I believe the answer is:
sign
This clue is a double definition.
'token' is the first definition.
(I've seen this in another clue)
'gesture' is the second definition.
(I know that sign is a type of gesture)
(Other definitions for sign that I've seen before include "Traffic control - to write one's name" , "Pointer - indicate agreement in writing" , "Engage by written agreement" , "Notice; omen" , "add name" .)