Barley n. : A valuable grain, of the family of grasses, genus Hordeum, used for food, and for making malt, from which are prepared beer, ale, and whisky.

Example:
How much Barley do I need to have 4 cups cooked Barley?

Taxonomy
barley, crops, six-row barley, grain, cultivation, spikes, Two-row barley, McGee, Hordeum vulgare, vulgare, animal feed, mutation, unranked, Barley straw, History, wheat, cereal, free encyclopedia.

Defination from the web:
barley bread in various countries, such as Scotland and in Africa. ... Wild barley has a brittle spike; upon maturity, the spikelets separate, facilitating seed dispersal. ...