charlie

Concise Oxford English Dictionary © 2008 Oxford University Press:
charlie/ˈtʃɑːli/

▶noun (pl. charlies)

• 1 Brit. informal a fool.

• 2 (charlies) Brit. informal a woman's breasts.

• 3 informal cocaine.

• 4 a code word representing the letter C, used in radio communication.

– origin C19: dimin. of the male given name Charles.