erect bushy hairy annual herb having trifoliate leaves and purple to pink flowers; extensively cultivated for food and forage and soil improvement but especially for its nutritious oil-rich seeds; native to Asia
<noun.plant>
the most highly proteinaceous vegetable known; the fruit of the soybean plant is used in a variety of foods and as fodder (especially as a replacement for animal protein)
<noun.food>
Soy \Soy\ (soi), Soya \Soy"a\(soi"[.a]), n. [Chinese sh[=o]y[=u].] 1. A Chinese and Japanese liquid sauce for fish, etc., made by subjecting boiled beans (esp. soybeans), or beans and meal, to long fermentation and then long digestion in salt and water.
2. (Bot.) The {soybean}. [1913 Webster +PJC]
Soja \So"ja\ (s[=o]"j[.a] or s[=o]"y[.a]), n. (Bot.) An Asiatic leguminous herb ({Glycine max}, formerly {Glycine Soja}) the seeds of which (called {soy beans}) are used in preparing the sauce called {soy}. Called also {soya}.
Soybean \Soy"bean\ (soi"b[=e]n`), n. 1. (Bot.) An Asiatic leguminous herb ({Glycine max}, formerly {Glycine Soja}) the seeds of which (also called {soy beans}) are used in preparing the sauce called {soy}. Called also {soya bean} and {soya}.
2. the seeds of the {Glycine max}, which produce {soybean oil}; -- called also {soya bean}. [PJC]
I keep my pigs outside all the time to the age of six and a half months and feed them on barley and soya mix with no animal protein.