Strong's G4950 · Greek

∑ύρτις

surtis · soor'-tis

from 4951; a shoal (from the sand drawn thither by the waves), i.e. the Syrtis Major or great bay on the north coast of Africa

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 Σύρτις (L, σῦρτις ), -εως , acc. -ιν, ἡ , Syrtis , the name of two large sand-banks on the Libyan coast: Ac 27:17 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain