The term "uli'uli" refers to a traditional Hawaiian musical instrument, often used in hula performances. It is a type of gourd rattle, typically made from a hollowed-out gourd filled with small seeds or pebbles. The uli'uli produces a rhythmic sound when shaken, adding a lively element to the music and dance. In addition to its musical role, the uli'uli is also visually striking, often decorated with feathers and other materials. It is commonly associated with the art of hula, a dance form that tells stories through movement and is an important aspect of Hawaiian culture.