noun. An unidentified bird or other cockamamie creature.
Real citation: "just got to the indep. coffee house near me...they have a bird in here. a cockawhatever in a cage. isn't there something about spreading the ebola virus that the health department frowns upon? at the same time, i kind of dig it."
(Kelly, email message, Sept. 4, 2006)
Made-up citation: "A cockapoo is a mix of a cocker spaniel and a poodle. A cockawhatever is an unholy crime against nature and all that is good and true and right."