1. Tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever
   - burweed marsh elder, false ragweed

Type of: iva, marsh elder

• cotyloid
• cotyloid cavity
• cotyloid joint
• cotyloidal
• coucal
• couch
• couch grass
• couch potato
• couchant
• couchette
• coudé system
• coudé telescope
• Coue
• cougar
• cough
• cough drop
• cough out
• cough up
• cougher
• coughing
• coughing up
• could
• couldest
• couldn't
• couldst