rainbow cactus: Meaning and Definition of

rain'bow cac"tus

Pronunciation: [key]
  1. an erect stiff cactus, Echinocereus pectinatus rigidissimus, of Arizona and Mexico, having a cylindrical body, numerous interlocking spines, and pink flowers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.