noun (n)

• 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)

  Synonym:
  glycine max, soja bean, soy, soya, soya bean, soybean, soybean plant
  

  source: wordnet30
• An Asiatic leguminous herb (Glycine Soja) the seeds of which are used in preparing the sauce called soy.(noun)

  source: webster1913