He's got the knack (3)
I believe the answer is:
art
I believe this is a double definition.
'he's' is the first definition.
'the knack' is the second definition.
(both can mean a skill or talent)
'got' is the link.
(Other definitions for art that I've seen before include "A name" , "Paintings etc." , "Skill in a specified thing" , "For example, Blakey's creative" , "Drawing" .)