Definition

Noun: * A tall Old World biennial thistle (Silybum marianum) with large, clasping, white-blotched leaves and purple flower heads. It is naturalized in California and South America. This plant is also commonly known as milk thistle.

Examples of Usage

• Noun:
  • Silybum marianum is easily identified by the distinctive white veins on its leaves.
  • The field was overrun with the invasive Silybum marianum.
  • Extracts from Silybum marianum have been used in traditional medicine.

Advanced Usage

• Scientific/Botanical Context: The term is primarily used in formal, scientific, or botanical writing to refer to the specific plant species. In common usage, the name "milk thistle" is far more frequent.
  • The study focused on the phytochemical properties of Silybum marianum.

Variants and Related Words

• Milk thistle (n): The most common name for , especially when referring to its herbal or medicinal uses.
  • She takes a milk thistle supplement for liver support.
• Blessed milkthistle (n): Another common name for the same plant.
• Mary thistle (n): A less common name, referencing the white blotches on the leaves which are legendarily associated with the Virgin Mary's milk.

Synonyms

• Milk thistle: The standard common synonym.
• Blessed milkthistle: A synonym emphasizing its historical herbal use.
• Mary thistle: A synonym referencing its folk etymology.

Notes on Meaning

• The term has only one specific meaning: it is the botanical Latin name for a particular species of thistle. It does not have idiomatic or phrasal verb uses. Its usage is almost entirely restricted to contexts where precise botanical identification is important.

Noun

1. tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America