guaiacum /gwīˈə-kəm/

1. Any of a family of tropical American trees of the genus Guaiacum, some yielding lignum vitae
2. (also guaiac) their greenish resin, used in medicine

• water doctors
• water dog
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• waterdrive
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• water drop
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• water dropwort
• water dropworts
• watered
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• water elder
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• water equivalent
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• waterer
• waterers
• waterfall
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• water fern