Tra từ perennial ragweed - Từ điển WordNet v3.1

Từ điển WordNet v3.1 - WordNet Dictionary

perennial ragweed

noun

coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
• Syn:
western ragweed, Ambrosia psilostachya
• Hypernyms:
ragweed, ambrosia, bitterweed