Rhinoceros is basically "nose horn". Greek for "one horn" is monoceros, the Latin equivalent is unicorn.

The German equivalent of unicorn is "einhorn", the Mandarin Chinese version is Qilin.

The Indian Rhinoceros, or Greater One-Horned Rhinoceros, is indeed "rhinoceros unicorni".

If this girl finds an Indian rhino, she has permission to take it home now.

Speaking of India, Honda sells a motorcycle known as the Honda Unicorn there, so maybe she could take home a motorcycle.