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Meaning of Symplegades

Sym•pleg•a•des

Pronunciation: (sim-pleg'u-dēz"), [key]
— n.pl. Class. Myth.
  1. a pair of rocky islands, at the entrance to the Black Sea, that often clashed together: Athena helped the Argonauts navigate them, after which they became fixed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.