The Collaborative International Dictionary of English v.0.48:
Barley \Bar"ley\, n. [OE. barli, barlich, AS. b[ae]rlic; bere
barley + l[imac]c (which is prob. the same as E. like, adj.,
or perh. a form of AS. le[=a]c leek). AS. bere is akin to
Icel, barr barley, Goth. barizeins made of barley, L. far
spelt; cf. W. barlys barley, bara bread. ?92. Cf. Farina,
6th Bear.] (Bot.)
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.
Barley bird (Zool.), the siskin.
Barley sugar, sugar boiled till it is brittle (formerly
with a decoction of barley) and candied.
Barley water, a decoction of barley, used in medicine, as a
nutritive and demulcent.
[1913 Webster] Barleybrake