1
: a plant that has blue flowers and that is grown for its fiber and its seed
Note: The fiber of flax is used to make linen and the seed is used to make linseed oil.
2
: the fiber of the flax plant
Cite this Entry
“Flax.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/flax. Accessed 15 Apr. 2026.
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