The most common and most likely answer to this crossword clue is the 9 letter word ROTTERDAM
I've seen this crossword clue in The Times
R
O
T
T
E
R
D
A
M
More clues leading to the result ROTTERDAM
- Swimmer in river crazy about Dutch port
- Bad person turning crazy in Dutch city
- Aquatic animal trapped by river barrier in port
- Port with nuts passed to the left by cad
- Swine raving about port
- City gent who’s unprincipled died in the morning
- Port dreamt about on bunk
- A bad egg dish for starter served with a medium port
- Swine block port
- Unpleasant type, crazy about Dutch city
Buddy explains!
The straight part
We know that "Port" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case port = rotterdam.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.