củ gấu
Definition
- Noun:
- Nutgrass / Nutsedge (Cyperus rotundus): A perennial weed, considered one of the world's most invasive, characterized by its triangular stems, grass-like leaves, and a network of small, hard tubers ("củ") underground.
- The tuber of this plant: Refers specifically to the small, roundish, and hard underground bulb or tuber from which the plant grows and spreads.
Usage Examples
- Noun:
- Cánh đồng này bị củ gấu xâm chiếm. (This field is infested with nutgrass.)
- Nhổ cỏ phải nhặt hết củ gấu thì nó mới không mọc lại. (When weeding, you must collect all the nutsedge tubers or it will grow back.)
Advanced Usage
- In traditional contexts, "củ gấu" may be mentioned in folk remedies, though it is primarily known as a persistent agricultural pest.
Variants and Related Words
- Cỏ gấu (n): Another common name for the nutgrass plant itself, focusing on the above-ground "grass" part.
- Cỏ gấu mọc lan rất nhanh. (Nutgrass spreads very quickly.)
Synonyms
- Nutgrass: Common name for .
- Nutsedge: Common name for plants in the genus.
- Coco-grass: Another regional name for this weed.
Notes on Meaning
- The name "củ gấu" literally translates to "bear's tuber," but this is its fixed botanical name. It does not refer to an actual bear or a food source for bears in common usage. Its primary meaning is the weedy plant or its tuber.