Sultry or sandy, a town and harbour of Phoenicia, in the tribe of Asher, but never acquired by them (Judg. 1:31). It was known to the ancient Greeks and Romans by the name of Ptolemais, from Ptolemy the king of Egypt, who rebuilt it about B.C. 100. Here Paul landed on his last journey to Jerusalem (Acts 21:7). During the crusades of the Middle Ages it was called Acra; and subsequently, on account of its being occupied by the Knights Hospitallers of Jerusalem, it was called St. Jean d'Acre, or simply Acre.
Easton's Bible Dictionary. M.G. Easton. 1897.