Shows the harbour lights (8)
I believe the answer is:
portrays
'shows' is the definition.
(I know this)
'harbour lights' is the wordplay.
'harbour' becomes 'port' (I've seen this before).
'lights' becomes 'rays' (I can't explain this - if you can you should give a lot more credence to this answer).
'port'+'rays'='PORTRAYS'
'the' is the link.
Can you help me to learn more?
(Other definitions for portrays that I've seen before include "paints?" , "Describes in words or makes picture of" , "Shows" , "Depicts" , "Represents" .)