a tall, horizontally branched cactus, Carnegiea (or Cereus) gigantea, of Arizona and neighboring regions, yielding a useful wood and bearing an edible fruit: still locally common, though some populations have been reduced.
Origin: 1855–60, Americanism; < MexSp saguaro, sahuaro, said to be < Opata (now extinct Uto-Aztecan language of Sonora)
sa·gua·ro (sə-gwär'ō, -wär'ō) n.
pl.sa·gua·ros also sa·hua·ros
A very large cactus (Carnegiea gigantea) of the southwest United States and northern Mexico, having ribbed upward-curving branches, white funnel-shaped flowers, and edible red fruit.