An annual plant (Cyamopsis tetragonolobus) in the pea family, cultivated chiefly in semiarid regions of South Asia as a forage crop and especially for its seeds, from which guar gum is obtained. Also called cluster bean.
[Hindi guār, from Sanskrit gopālī, a kind of cucumber, short for gopālakarkaṭī, cowherder's cucumber, from gopālaḥ, cowherd : gauḥ, cow; see gwou- in the Appendix of Indo-European roots + pālayati, he brings across safely, protects (variant of pārayati; see per-2 in the Appendix of Indo-European roots).]
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