Makes the first move (6)
I believe the answer is:
starts
'makes the first move' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for starts that I've seen before include "Begins or makes sudden movement as from surprise" , "Begins or flinches" , "Begins with surprise reactions?" , "jerks" , "Begins to make sudden surprised movements" .)