Juliet has trouble in Holloway, say (4)
I believe the answer is:
jail
'holloway say' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'juliet has trouble' is the wordplay.
'juliet' becomes 'J' (phonetic alphabet: alpha, bravo, charlie etc.).
'has' says to put letters next to each other.
'trouble' becomes 'ail' (synonyms).
'j'+'ail'='JAIL'
'in' is the link.
Can you help me to learn more?
(Other definitions for jail that I've seen before include "detention" , "having a stretch here?" , "Cooler" , "Clink" , "Correctional institution" .)