Related Clues:

• Compound of oxygen and one other element
• Destroy metal gradually by chemical action
• The biggest of the birds came back and was riding to rot
• Sounds like an 11 down way to be seeing that it gets rusty
• The beast I make an appointment with to make it rusty?
• Eat away as one was on horseback at last
• Is that the beast I make an appointment with so as to make it rusty?
• Rust, for instance, has a beastly look, by the sound of it
• The beast I had started to rust
• Salt for the poem around eleven
• There's eleven in the ode for salt
• The beast I make an appointment with in chemical fashion
• With sound, beastly, salty eyes
• That gave one such a beastly look, by the sound of it, with O in it
• The sort of salt a beast might get to die with