Guiro

A musical instrument with a serrated surface which gives a rasping sound when scraped with a stick, originally made from an elongated gourd and used in Latin American music.
Found on http://www.bbc.co.uk/radio2/soldonsong/glossary/g.shtml

guiro

(from the article `percussion instrument`) Scrapers are highly popular. The notched gourd with natural handle, called guiro, is another African American instrument. Notched turtle carapaces ...
Found on http://www.britannica.com/eb/a-z/g/81

Guiro

scraper of the Caribbean; long, fretted gourd rubbed with stick.
Found on http://www.hobgoblin-usa.com/info/glossary.htm

guiro

serrated gourd scraped with stick to produce music
Found on http://phrontistery.info/g.html
No exact match found