- barley, barleycorn - a grain of barley
--1 is a kind of grain, food grain, cereal
--1 is a part of common barley, Hordeum vulgare
--1 has particulars: pearl barley - barley - cultivated since prehistoric times; grown for forage and grain
--2 is a kind of cereal, cereal grass
--2 is a member of Hordeum, genus Hordeum
--2 has particulars:common barley, Hordeum vulgare; barley grass, wall barley, Hordeum murinum; squirreltail barley, foxtail barley, squirreltail grass, Hordeum jubatum; little barley, Hordeum pusillum