To save this word, you'll need to log in.
Definition of silk grass
1a : a needlegrass (Stipa comata)
b : a mountain rice (Oryzopsis hymenoides) with long awns
2 : any of several fiber plants especially of Agave or the related genus Nidularium (family Bromeliaceae)
3 : any of several commercial fibers from plants of the family Bromeliaceae: such as
a : a fine flexible lustrous strong fiber obtained from the pineapple and used for textiles
b : a similar fiber from a karatas (Karatas plumieri)
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quizSemantic Drift Quiz
A challenging quiz of changing words.
Take the quizSpell It
Can you spell these 10 commonly misspelled words?
Take the quizAdd Diction
Build a chain of words by adding one letter at a time.
Play the game
Share silk grass