Suez stopover is left spoken (4,4)
I believe the answer is:
port said
'suez stopover' is the definition.
The definition suggests a singular noun which matches the answer.
'left spoken' is the wordplay.
'left' becomes 'port' (left side of a ship - opposite of starboard).
'spoken' becomes 'said' (said out loud).
'port'+'said'='PORT SAID'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for port said that I've seen before include "Place" , "Egyptian city" , "Mediterranean city" .)