Adelaide is presumably a female anthropomorphic dog.
Adelaide is an aunt of Goofy (either on his father or mother's side). She owned an antique coffee grinder. For reasons unknown, Goofy owned a projector slide of that coffee grinder, which he mixed up with his windmill slides at a "lecture" he gave on the history of mills.
Behind the scenesEdit
Aunt Adelaide was mentioned in the 1987 story A Goofy Look at Mills.