Sirenes  (sī-rē´nēz ), or Sirens  (si ´renz ).—Sea nymphs, three in number, who had the power of enticing mariners to their destruction on dangerous rocks by their sweet music. In order to get his ship away in safety from them, Ulysses stuffed the ears of his companions with wax and then tied himself to the mast of the vessel, and did not release himself till he could no longer hear their charming voices. They dwelt on an island near the southwest coast of Italy.