shack-shack

Imitative of its sound.

shack-shack (plural shack-shacks)

1. (music, Caribbean) A child's rattle, used in various Caribbean folk music traditions.
2. The seed pod of various trees, especially the wild tamarind, woman's tongue tree (Albizia lebbeck) and flamboyant (Delonix regia).

The spellings shak-shak or chac-chac may be more common in reference to the musical instrument. The seed pod may be called shack-shack in reference to the sound being like that created by the rattle.

• shak-shak