Without issue, bill folded through last entrance (9)
I believe the answer is:
spellbind
'entrance' is the definition.
(I know that entrance can be written as spellbind)
'without issue bill folded through last' is the wordplay.
'without issue' becomes 'sp' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'folded' indicates an anagram.
'through' indicates putting letters inside (inserted letters go through the word).
'last' becomes 'end' (I've seen this in another clue).
'bill' is an anagram of 'llbi'.
'llbi' placed inside 'end' is 'ellbind'.
'sp'+'ellbind'='SPELLBIND'
Can you help me to learn more?
(Other definitions for spellbind that I've seen before include "Enrapture" , "entrance" , "Hold rapt" , "grip" .)