Definition

1. Noun:
   • A European species of wild leek (Allium triquetrum) that has become established in Great Britain. Its most distinguishing feature is the triangular shape of its leaf stems in cross-section.

Usage Notes

• This is a specific botanical term for a plant species. It is primarily used in formal, scientific, or gardening contexts.
• The term is a compound noun where "triquetrous" describes the key characteristic (three-cornered, triangular) of the plant part, and "leek" identifies its genus.
• It is not commonly used in everyday conversation.

Examples

• Noun:
  • The triquetrous leek has become a common sight in the hedgerows of southwestern England.
  • Botanists note that the triquetrous leek can be identified by its distinctive white flowers and, of course, its triangular leaves.

Advanced Usage

• The term can be used metonymically to refer to the plant as an invasive species in ecological discussions.
  • The spread of the triquetrous leek is challenging native flora in some coastal regions.

Variants and Related Words

• Three-cornered leek: A common alternative name for the same plant, using a more descriptive English phrase instead of the Latin-derived "triquetrous."
• Allium triquetrum: The formal botanical (Latin) name for the species.

Synonyms

• Three-cornered leek
• Allium triquetrum (scientific name)
• Angled onion (less common)

Different Meanings

• The word "leek" alone () refers to a common vegetable. "Triquetrous leek" specifies a different, wild species with a particular morphological trait (triangular stems). They are related but distinct plants.

Noun

1. European leek naturalized in Great Britain; leaves are triangular