Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

See What's Trending Now See More Trending Words

knotgrass

play
noun knot·grass \ˈnät-ˌgras\

Definition of knotgrass

  1. 1 :  a cosmopolitan prostrate weed (Polygonum aviculare) of the buckwheat family with jointed stems, prominent sheathing stipules, and minute flowers; broadly :  any of several congeneric plants

  2. 2 :  any of several grasses (such as Paspalum distichum) with markedly jointed stems

Read the Latest from M-W

image1458426927
Good Words for Strong Flavors
alt-599492594f435
How 'Wonderful' Lost Its Sense of Wonder
video-title-words-of-the-year-1066
Words of the Year: 1066
time-traveler-quiz-which-word-came-first
Time Traveler Quiz: Which Word Came First?

Recent Examples of knotgrass from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knotgrass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of knotgrass

1538

Learn More about knotgrass

  1. See words that rhyme with knotgrass

Seen and Heard

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

show hide

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

perfunctory

play

done merely as a duty

Get Word of the Day daily email!

TRENDING NOW

  1. repugnant Trump clarifies his position on racism

  2. white nationalist, white supremacist Trending in 2017

  3. bereft "Lacking something needed, wanted, or expected"

  4. impanel "To choose people to serve on a jury"

  5. cosmopolitan "Worldly"

SEE ALL

Love words? Need even more definitions?

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

Words at Play

alt-599492594f435
How 'Wonderful' Lost Its Sense of Wonder

A case of semantic bleaching

dog-covering-face
Don't Let Reading This Be Another 'Coulda' 'Shoulda' 'Woulda'

PSA: They're three separate words.

image1458426927
Food Words for Strong Flavors

A tasting menu of vivid flavor descriptions

alt-5993066a3afad
What's the Plural of 'Maitre d''?

Use this word to confuse a French speaker.

Ask the Editors

video-title-words-of-the-year-1066
Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

time-traveler-quiz-which-word-came-first
Time Traveler Quiz: Which Word Came First?

Which word entered the English language first?

Take the quiz
name-more-food
Name More Food!

Test your knowledge of food vocabulary!

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
SCRABBLE® Sprint
SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game