Foxtrot jump I attempt finally in shabby theatre (7)
I believe the answer is:
fleapit
'shabby theatre' is the definition.
'fleapit' can be an answer for 'theatre' (fleapit is a kind of theatre). I am unsure of the 'shabby' bit.
'foxtrot jump i attempt finally' is the wordplay.
'foxtrot' becomes 'f' (phonetic alphabet: alpha, bravo, charlie etc.).
'jump' becomes 'leap' (leap is a kind of jump).
'finally' says to take the final letters.
The last letter of 'attempt' is 't'.
'f'+'leap'+'i'+'t'='FLEAPIT'
'in' is the link.
Can you help me to learn more?
(Other definitions for fleapit that I've seen before include "Shabby old cinema" , "shabby public building" , "jumper" , "Run-down place for pictures" , "Run-down cinema" .)