goolie
/ˈɡuːli
/(also gooly)
noun (plural goolies)
1 (usually goolies) British vulgar slang A testicle.
2Australian /NZ informal A stone or pebble.
Origin
1930s (in sense 1): apparently of Indian origin; compare with Hindi golī 'bullet, ball, pill'. sense 2 is possibly from an Aboriginal language of New South Wales.