a slang term often used to short for 'cosmopolitan' as in a sophisticated or international person.

सभ्य व्यक्ति

English Usage: She is a true cosmo, with friends all over the world.

Hindi Usage: वह एक सच्ची सभ्य व्यक्ति है, जिसके दोस्त दुनिया भर में हैं।