Fair Havens = "goodly ports"
1) a bay of Crete, near the city Lasaea, so called because it had a good harbour
Part of Speech: noun proper locative
Plural of G2570 and G3040; Good Harbors, that is, Fairhaven, a bay of Crete: - fair havens.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root Καλοι Λιμένης; click on the second column to search for that grammatical form of the root Καλοι Λιμένης; click on the third column to search for that word and grammatical form; click on the total to search for the root Καλοι Λιμένης.