Definition

1. Noun:
   • Nut grass: A type of perennial weed, scientifically known as Cyperus rotundus, characterized by its grass-like appearance, triangular stems, and underground tubers or "nuts" that form an extensive network. It is notoriously difficult to eradicate from gardens and agricultural fields.
   • A common, invasive weed: Refers specifically to this plant, which is considered a pest in many regions due to its rapid spread and resilience.

Usage Examples

• Noun:
  • Khu vườn này đầy cỏ gấu. (This garden is full of nut grass.)
  • Cỏ gấu là loài cỏ dại khó kiểm soát. (Nut grass is a weed that is hard to control.)

Advanced Usage

• "diệt cỏ gấu": to eradicate nut grass.
  • Chúng tôi đang tìm cách diệt cỏ gấu trong ruộng lúa. (We are looking for a way to eradicate nut grass in the rice field.)

Variants and Related Words

• Cỏ dại (n): weed. A general term for unwanted plants.
• Củ cỏ gấu (n): nut grass tuber. Refers specifically to the underground part of the plant.

Synonyms

• Cỏ lăn: A less common regional name for the same or similar weed.
• Cỏ cyperus: A scientific/common name reference.

Related Phrases

• Cỏ gấu mọc lan: The nut grass is spreading.
  • Chỉ một thời gian ngắn, cỏ gấu đã mọc lan khắp nơi. (In just a short time, the nut grass has spread everywhere.)

1. Nut grass