Boyd’s Bible Dictionary:
(approaching). A Roman seaport on northern shore of Gulf of Adramyttium (Acts 20:13-14).
Concise Bible Dictionary:
Seaport in Mysia, in the west of Asia Minor, on the north shore of the Gulf of Adramyttium, 20 miles from Troas (Acts 20:13-14). A glance at a map will show that Paul in walking from Troas to Assos could be there as soon as the ship. The place is now utterly desolate, but with ruins in good preservation, some being of granite.
Strong’s Dictionary of Greek Words:
Meaning:
probably of foreign origin; Assus, a city of Asia MInor
Potts’ Bible Proper Names:
Firm; coming near to:―a city of Asia Minor, Acts 20:13. {Firms}