Noun
organ pipe cactus (plural organ pipe cactuses or organ pipe cacti)
A cactus (family Cactaceae) (Stenocereus thurberi, syn. Glandulicereus thurberi), widespread in Mexico.
organ-pipe cactus
The National Park Service has prohibited access to Quitobaquio Sprigs near Organ Pipe Cactus National Monument, considered sacred by Tohono O’odham tribe. Source: Internet