Abbott-Smith Manual Greek Lexicon
σάλος (G4535)
1 σάλος , -ου, ὁ [in LXX for מוֹט , etc. ;] in poets and late prose, a tossing , as of an earthquake; esp. the tossing , the rolling swell of the sea: Lk 21:25 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain