| 1. | a baked food having a filling of fruit, meat, pudding, etc., prepared in a pastry-lined pan or dish and often topped with a pastry crust: apple pie; meat pie. |
| 2. | a layer cake with a filling of custard, cream jelly, or the like: chocolate cream pie. |
| 3. | a total or whole that can be divided: They want a bigger part of the profit pie. |
| 4. | an activity or affair: He has his finger in the political pie too. |
| 5. | pizza. |
| 6. | easy as pie, extremely easy or simple. |
| 7. | nice as pie, extremely well-behaved, agreeable, or the like: The children were nice as pie. |
| 8. | pie in the sky,
|

pie 2 (pī) n. See magpie. [Middle English, from Old French, from Latin pīca.] |
pie 5 (pī) n. & v. Printing Variant of pi2. |
| PIE abbr. Proto-Indo-European |
The irrational number obtained by dividing the length of the diameter of a circle into its circumference. Pi is approximately 3.1416. The sign for pi is π.
pI (pē'ī')
n.
The pH value for the isoelectric point of a given substance in solution.
pie
In addition to the idiom beginning with pie, also see apple-pie order; easy as pie; eat crow (humble pie); finger in the pie; slice of the pie.
| PIE Proto-Indo-European |
pie
dish made by lining a shallow container with pastry and filling the container with a sweet or savoury mixture. A top crust may be added; the pie is baked until the crust is crisp and the filling is cooked through. Pies have been popular in the United States since colonial times, so much so that apple pie has become symbolic of traditional American home cooking. The typical American pie is round, 8-10 inches (20-25 cm) in diameter, 2-3 inches (5-8 cm) thick, and usually contains a sweet filling of fruit, custard, or a pastry cream. Some American specialties are pecan pie, pumpkin custard pie (traditionally served on Thanksgiving Day), lemon pie with a soft meringue topping, and shoofly pie, a Pennsylvania Dutch (see Pennsylvania German) pie with a rich filling containing molasses.
Learn more about pie with a free trial on Britannica.com.