Peep into not so historical centre of poetry (6)
I believe the answer is:
lesbos
'historical centre of poetry' is the definition.
I can't judge whether this definition defines the answer.
'peep into not' is the wordplay.
'peep' becomes 'bo' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'into' is an insertion indicator.
'not' becomes 'less' (I've seen this in other clues).
'bo' put within 'less' is 'LESBOS'.
'so' is the link.
Can you help me to learn more?
(Other definitions for lesbos that I've seen before include "Island, home of Sappho" , "Jot" , "Greek island -- home of 3" , "Greek island, birthplace of Sappho" .)