milk thistle

noun

Definition of milk thistle

  1. :  a tall thistle (Silybum marianum) having white-veined dark green leaves and large purple flower heads that is native to the Mediterranean region but has become naturalized elsewhere including the U.S.; also :  an extract of milk thistle and especially its seeds that is held to protect the liver from damage or disease

First Known Use of milk thistle

1562


Medical Dictionary

milk thistle

play
noun milk this·tle \-ˈthis-əl\

Medical Definition of milk thistle

  1. 1:  a tall thistle (Silybum marianum) that is the source of silymarin, has large clasping white-blotched leaves and large purple flower heads with bristly receptacles, and is native to southern Europe but has been widely introduced elsewhere including the United States

  2. 2:  an extract of milk thistle and especially its seeds :  silymarin


Seen and Heard

What made you want to look up milk thistle? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

set in a bent position

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!