Quick answer
Arabella is a girl name.
Meaning and history
Medieval Scottish name, probably a variant of Annabel. It has long been associated with Latin orabilis meaning "invokable, yielding to prayer", and the name was often recorded in forms resembling this. Unrelated, this was an older name of the city of Irbid in Jordan, from Greek Ἄρβηλα (Arbela).
Notes and context
Usage: english