guaiacum
nounDefinition of guaiacum
1
: any of a genus (Guaiacum) of the caltrop family of tropical American evergreen trees and shrubs having pinnate leaves, usually blue flowers, and capsular fruit
2a
: the hard greenish-brown wood of a guaiacum (especially Guaiacum officinale)
b
: a resin with a faint balsamic odor that is obtained from the trunk of two guaiacums (G. officinale and G. sanctum) and often used as a clinical reagent
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