flax
Concise Oxford English Dictionary © 2008 Oxford University Press:
flax/flaks/
▶noun
- 1 a blue-flowered herbaceous plant that is cultivated for its seed (linseed) and for textile fibre made from its stalks. [Linum usitatissimum.]
■ textile fibre obtained from flax.
- 2 another term for New Zealand flax.
– origin OE flæx, of W. Gmc origin.
'flax' also found in these Oxford entries:

