designating a family (Linaceae, order Linales) of dicotyledonous plants and shrubs usually having narrow leaves and five-part flowers
noun
any of a genus (Linum) of the flax family; esp. a slender, erect annual plant (L. usitatissimum) with delicate, blue flowers: the seeds are used to make linseed oil, and the fibers of the stem are spun into linen thread
the threadlike fibers of these plants, ready for spinning
any of a number of flaxlike plants
See flax in American Heritage Dictionary 4
(flăks)
noun
a. A widely cultivated plant, Linum usitatissimum, having pale blue flowers, seeds that yield linseed oil, and slender stems from which a textile fiber is obtained.
b. The fine, light-colored textile fiber obtained from this plant.
c. Any of various other plants of the genus Linum or of similar or related genera.
A pale grayish yellow.
(click for a larger image)
flax
flax flower and seed pods (left) and cutaway of stem (right)