Meaning of organ-pipe cactus

or'gan-pipe" cac"tus

Pronunciation: (ôr'gun-pīp"), [key]
  1. a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.