Great to bring in trap involving attraction (8)
I believe the answer is:
magnetic
'attraction' is the definition.
(magnetic attraction is a kind of attraction)
'great to bring in trap' is the wordplay.
'great' becomes 'magic' (both can mean very good).
'to bring in' indicates putting letters inside.
'trap' becomes 'net' (net is a kind of trap).
'magic' placed around 'net' is 'MAGNETIC'.
'involving' is the link.
(Other definitions for magnetic that I've seen before include "Attracting iron or steel" , "Very attractive or alluring" , "Having the power to attract" , "Having the property of attracting iron" , "Able to attract metal, or charismatic" .)