Musical instrument made of a hollow gourd

Wiktionary Word definitions in Wiktionary
n. A musical instrument made of a hollow gourd with parallel notches cut in one side, and played by rubbing a stick or scraper ("pua") along the notches to produce a ratchet-like sound.

Wikipedia Word definitions in Wikipedia
The güiro is a Latin American percussion instrument consisting of an open-ended, hollow gourd with parallel notches cut in one side. It is played by rubbing a stick or tines along the notches to produce a ratchet -like sound. The güiro is commonly used ...