Brothers’ house in quiet port by railway (6)
I believe the answer is:
priory
'brothers' house' is the definition.
'priory' can be an answer for 'house' (priory is a kind of house). I'm not certain of the 'brothers'' bit.
'quiet port by railway' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'port' becomes 'rio' (Rio de Janeiro is a port).
'by' means one lot of letters go next to another.
'railway' becomes 'ry' (abbreviation).
'p'+'rio'+'ry'='PRIORY'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for priory that I've seen before include "Christian religious house subject to an abbey" , "where all men are brothers?" , "Abbotless monastery" , "Religious house of monks or nuns" , "Convent subject to an abbey" .)