Dictionary:

ragi

  (răg'ē)

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See finger millet.

[Hindi rāgī, from Sanskrit, perhaps of Dravidian origin.]

Dried balls of starter containing moulds, yeast and bacteria on cereal or starch, used as a starter inoculation for production of lao-chao, saké, tape, and other fermented foods.

The noun has one meaning:

Meaning #1: East Indian cereal grass whose seed yield a somewhat bitter flour, a staple in the Orient
  Synonyms: finger millet, ragee, African millet, coracan, corakan, kurakkan, Eleusine coracana