1. Shaped like a spine or thorn
   - acanthous, spinous

See also: pointed

• Rustbelt
• rusted
• rustic
• rusticate
• rustication
• rusticism
• rusticity
• rustily
• rustiness
• rusting
• rustle
• rustler
• rustless
• rustling
• rustproof
• rustproofed
• rusty
• rusty blackbird
• rusty grackle
• rusty rig
• rusty woodsia
• rusty-brown
• rusty-red
• rut
• Ruta