What does "scylla" mean?

A dangerous rock on the Italian coast opposite the whirlpool Charybdis on the coast of Sicily. The passage between Scylla and Charybdis was formerly considered perilous; hence, the saying between Scylla and Charybdis signifies a great peril on either hand.

What is a synonym for "scylla"?

Common synonyms include: dragon, harpy, loch ness monster, medusa, monster, mythical monsters.

Scylla

//ˈsɪlə// name

name ·Uncommon ·Advanced level

Definitions

Proper Noun

1
A dangerous rock on the Italian coast opposite the whirlpool Charybdis on the coast of Sicily. The passage between Scylla and Charybdis was formerly considered perilous; hence, the saying between Scylla and Charybdis signifies a great peril on either hand.
"I have never yet been able to steer my lovers through the Scylla of presence, or the Charybdis of absence."
2
A personification of said rock as a ravenous monster. Greek
3
A princess, daughter of King Nisos of Megara, who fell in love with King Minos and betrayed her city to him. Greek
"Ah cease rash Youth! desist e'er 'tis too late, / Fear the just Gods, and think of Scylla′s Fate!"
4
The main belt asteroid 155 Scylla.