Related Clues:

• Iron __ (rust)
• Chemical making leather without using hydrogen
• Cause to rust
• Farm animal I'd put on drug, a chemical compound
• Rust, e.g., chemically
• Rust makeup
• Become rusty, say
• Gradual decay such as from rusting
• Form rust, perhaps
• "Zinc" or "nitrous" follower
• Gradually destroy fuel element in reactor’s heart
• Compound in hydrogen-depleted animal skin
• Zinc ___ (sunscreen additive)
• Do worse than just rust
• Compound with oxygen