What is the meaning of Rye?

A grain used extensively in Europe for making bread, beer, and (now generally) for animal fodder. 

The grass Secale cereale from which the grain is obtained. 

Ellipsis of rye bread. 

Ellipsis of rye whiskey, whiskey made mainly or wholly from rye grain. 

A drink (serving) of rye whiskey.

Caraway (from the mistaken assumption that the whole seeds, often used to season rye bread, are the rye itself)

Ryegrass, any of the species of Lolium.

A disease of hawks.

The katakana syllable リェ (rye) in Hepburn romanization.

rye (Secale cereale or its grain)

rya

Source: wiktionary.org