hum...can someone help me here? what does shanaro even meen? (for those who don't get what...

I think it's Sakura's catchphrase, because she uses it a lot. It means "hell yeah!" sometimes.

It's a sound to express anger, it's a phrase that has no litteral meaning. But yeah, it's usually translated as "hell yeah" or "hell no" or "damn it". It was always used by inner Sakura lol, and it's seen as pretty crude Japanese usage. It's censored in the anime in English, she says "Cha!" instead.