1. One who, or that which, aids

Derived forms: aiders

• European brown bat
• European catfish
• European Central Bank
• European chestnut
• European Community
• European corn borer moth
• European country
• European cranberry
• European cranberrybush
• European creeper
• European cuckoo
• European curlew
• European dewberry
• European dogtooth
• European dune grass
• European Economic Community
• European elder
• European elk
• European elm
• European field elm
• European fire salamander
• European flatfish
• European fly honeysuckle
• European gallinule
• European goatsucker