Euraquilo was the violent east or northeast wind that drove Paul’s ship toward shipwreck at Melita. The word was apparently a sailors’ term for that particular wind.
Acts uses the term in describing the storm that overtook Paul’s voyage. The wind carried the ship toward the shipwreck near Malta.
The precise form of the sailors’ expression is uncertain because it was not in general use. “Euraquilo” is explained as a compound of Greek for east wind and Latin for northeast wind, corresponding to navigational experience in those waters.