Stylish English member introducing a set of books (7)
I believe the answer is:
elegant
'stylish' is the definition.
(both can mean fancy or ornate)
'english member introducing a set of books' is the wordplay.
'english' becomes 'e' (abbreviation).
'member' becomes 'leg' (member can mean a limb).
'introducing' says to put letters next to each other (some letters go before others).
'set of books' becomes 'NT' (New Testament).
'e'+'leg'+'a'+'nt'='ELEGANT'
(Other definitions for elegant that I've seen before include "A gentle sort of stylish appearance" , "Teen gal (anag.)" , "Well-dressed" , "Neat leg? (anag)" , "Refined gracefulness" .)