Hamburger's good, on reflection, for Yank (3)
I believe the answer is:
tug
'yank' is the definition.
(both can mean to pull sharply)
'hamburger's good on reflection' is the wordplay.
'hamburger's' becomes 'ut' (I can't justify this - if you can you should give a lot more credence to this answer).
'good' becomes 'g' (abbreviation).
'on' says to put letters next to each other.
'reflection' is a reversal indicator.
'ut' put after 'g' is 'gut'.
'gut' written backwards gives 'TUG'.
'for' is the link.
Can you help me to learn more?
(Other definitions for tug that I've seen before include "gravitational force" , "Small boat for towing others" , "Pull like small boat" , "A sharp pull or a towing boat" , "Pull suddenly; boat" .)