Religious office putting pressure on port tariff (8)
I believe the answer is:
priorate
'religious office' is the definition.
The definition suggests a singular noun which matches the answer.
'pressure on port tariff' is the wordplay.
'pressure' becomes 'p' (abbreviation).
'on' says to put letters next to each other.
'port' becomes 'rio' (Rio de Janeiro is a port).
'tariff' becomes 'rate' (I've seen this before).
'p'+'rio'+'rate'='PRIORATE'
'putting' is the link.
Can you help me to learn more?
(Another definition for priorate that I've seen is " superior office".)