Just one of the first two flyers delivered (5)
I believe the answer is:
right
'just' is the definition.
(associated in meaning)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for right that I've seen before include "Fair or just" , "Complete" , "Authority - one hand" , "Punch" , "It's what you deserve" .)