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Welsh Rarebit
Anglo / American
RAREBIT
, n. A Welsh Rabbit, in the speech of the humorless, who point out that it is not a rabbit. To whom it may be solemnly explained that the comestible known as toad-in-a-hole is really not a toad, and that riz-de-veau à la financière is not the smile of a calf prepared after the recipe of a she banker.- Ambrose Bierce
"Welsh Rabbit" predates the "Welsh Rarebit" in literature. The word rarebit appears in no other context, thus was certainly made up by some clueless scribbler.
See Welsh Rabbit.