Mark somewhere in Central America (5)

I believe the answer is:

colon

I believe this clue is a double definition.

'mark' is the first definition.
(colon is a kind of mark)

'somewhere in central america' is the second definition.
(city in Panama)

(Other definitions for colon that I've seen before include "cut short dependency?" , ": - bit of the gut" , "Part of the intestine - punctuation mark" , "Part of intestines" , "cash" .)

I've seen this clue in The Guardian.

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