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rainbow cactus

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noun
an erect stiff cactus, Echinocereus pectinatus rigidissimus, of Arizona and Mexico, having a cylindrical body, numerous interlocking spines, and pink flowers.
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Origin of rainbow cactus

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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