Strong’s Greek
G4535 — salos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
σάλος
salos — pronounced sal'-os
probably from the base of 4525; a vibration, i.e. (specially), billow:--wave. see GREEK for 4525
1 occurrence in the KJV.
Luke 21:25
And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring;