Other forms: bunnies
Bunny is another name for a rabbit, the soft long-eared mammal that's commonly kept as a pet and hops around on strong hind legs.
Bunny is an informal word that comes from the Scottish bun, also a pet name for a rabbit. Some etymologists think it derives from an earlier meaning of bun in Scottish, "tail of a hare." You're most likely to refer to a rabbit as a bunny if you're a child, if you're talking about a pet (rather than a wild rabbit), or if you're referring to the Easter bunny.