Share this entry

knapweed Syllabification: knap·weed
Pronunciation: /ˈnapwēd/

Definition of knapweed in English:


A tough-stemmed plant of the daisy family that typically has purple thistlelike flower heads, occurring typically in grassland and on roadsides.
Example sentences
  • The oil from the seeds of cotton thistles was extracted for fuel and knapweed, centaurea scabiosa, was believed to promote healing of bruises and wounds.
  • Currently, most producers apply chemicals on rangeland in spring or summer, when knapweed begins to flower, but research is showing that fall application may be preferable.
  • Spotted knapweed is not killed by fire, but sagebrush is.


Late Middle English (originally as knopweed): from knop (because of its hard rounded involucre or “head”) + weed.

Words that rhyme with knapweed

seaweed • chickweed

Definition of knapweed in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day haughty
Pronunciation: ˈhôdē
arrogantly superior and disdainful