Assos = "approaching"
1) a seaport of the Roman province of Asia in the district anciently called Mysia, on the north shore of the Gulf of Adramyttium, and about 7 miles (11 km) from Lesbos
Part of Speech: noun proper locative
Probably of foreign origin; Assus, a city of Asia Minor: - Assos.
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 Ἆσσος; click on the second column to search for that grammatical form of the root Ἆσσος; click on the third column to search for that word and grammatical form; click on the total to search for the root Ἆσσος.