Draw into conversation, as you promise (6)
I believe the answer is:
engage
'promise' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for engage that I've seen before include "Participate" , "having to start a battle" , "Recruit" , "Morally committed to" , "Allay" .)