Strong’s Greek
G2860 — kolumbao
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κολυμβάω
kolumbao — pronounced kol-oom-bah'-o
from kolumbos (a diver); to plunge into water:--swim.
1 occurrence in the KJV.
Acts 27:43
But the centurion, willing to save Paul, kept them from their purpose; and commanded that they which could swim should cast themselves first into the sea, and get to land: