Nina in spanish means baby...It's the slang word a boyfriend might use for his girlfriend. Your words Nina should have the accent ~ above it. like this: niÃ±a. 'Nina' means girl.
Top definition Temperamental unknown A person that can explode at any given moment, one minute everything can be super-duper and their company that of something wonderful and the next they are loathsome.
Temperament. 1  This describes the breed's tendency to behave in particular ways. While every dog is an individual and may stray from its breed's stereotypical personality traits, a breed's temperament can give you a general idea of the characteristics of the dog you're thinking of getting.