the.com/rain stick

means A hollow tube—traditionally a dried cactus stem packed with small pebbles or seeds and pierced with spines or thorns—that, when tilted, produces a soft cascading sound resembling falling rain.

from The name is a plain English compound, 'rain' plus 'stick,' describing exactly what the object imitates. The instrument itself is widely associated with Indigenous peoples of the Americas, particularly the desert regions of Chile and the southwestern United States, where dried cactus stems were the natural raw material. There is a popular tale that such sticks were used in rituals to summon rain, but the evidence for any single ceremonial origin is thin and varies by culture; what's certain is the simple acoustic trick—pebbles trickling past internal spines—has been reinvented in many places, and the English label is a modern, literal description rather than a translation of any older name.