- in the sky, fanciful ideas (3)
I believe the answer is:
pie
(Other definitions for pie that I've seen before include "Dish baked in pastry-lined pan" , "Small, former Indian coin" , "Dish baked in an oven, with pastry or mashed potato topping" , "A baked dish covered with pastry" , "Pasty - former Indian coin - mixed type - bird" .)