Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

knapweed

play
noun knap·weed \-ˌwēd\

Definition of knapweed

  1. :  any of various weedy centaureas; especially :  a widely naturalized European perennial (Centaurea nigra) with tough wiry stems and knobby heads of purple flowers




Learn More about knapweed


Seen and Heard

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

WORD OF THE DAY

to work hard

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

angry maudlin oily prompt
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ