The name Avis is a girl's name of Latin origin meaning "bird". Avis and is often added to lists like Unique Girl Names: Unusual and Rare and discussed in our forums with posts like "Change One Letter".
From the experts:
Avis is a bird name that's been in hibernation for awhile, possibly due to the car rental association, but it could make a return on the wings of Ava. Baldwin brother Daniel chose it for his daughter.
Avis Everhard is the fictional narrator of the Jack London dystopian novel The Iron Heel. In the Harry Potter books, Avis is not a character, but a spell.