Guar

The Guar or cluster bean (Cyamopsis tetragonoloba) is an annual legume and the source of guar gum. It is also known as Gavar, Guwar or Guvar bean. The origin of Cyamopsis tetragonoloba is unknown, since it has never been found in the wild. It is assumed to have developed from the African species C. senegalesis. It was further domesticated in India...
Found on http://en.wikipedia.org/wiki/Guar

guar

[n] - drought-tolerant herb grown for forage and for its seed which yield a gum used as a thickening agent or sizing material
Found on http://www.webdictionary.co.uk/definition.php?query=guar
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