Longman Dictionary of Contemporary English - pie

~ n 1 a sweet food usually made with fruit baked inside a pastry covering  (apple pie | a slice of pie)  (- compare tart1 (1)) 2 especially BrE a food made of meat or vegetables baked in a pastry covering  (He bought a pie for lunch. | steak and kidney pie) 3 slice/share/piece of the pie a share of something such as money, profits etc  (The smaller companies want a bigger share of the pie.) 4 pie in the sky something good that someone is promising or suggesting, but which you do not think will happen  (The idea of full employment is just pie in the sky.)  (- see also mud pie, pie chart, easy as pie (easy1 (1)), eat humble pie (humble1 (6)), have a finger in every pie (finger1 (11)), be as nice as pie (nice (5)))