1. a very large cactus with a tall columnar trunk and upward-curving branches, native to the Sonoran Desert of Arizona and northwestern Mexico

Examples

• The saguaro can grow to be over 40 feet tall.
• Saguaro cacti are iconic symbols of the American Southwest.
• The desert landscape was dotted with towering saguaros.
• It takes decades for a saguaro to develop its characteristic arms.
• Many birds nest in holes carved into saguaro trunks.
• The saguaro blooms with white flowers in late spring.