Pi is a number, approximately 3.142, which is equal to the distance round a circle divided by its width . It is usually represented by the Greek letter π.

A pie consists of meat , vegetables , or fruit baked in pastry.

on foot

a large New Zealand seabird , Phalacrocorax varius , with a white throat and underparts

(in German legend ) a piper who rid the town of Hamelin of rats by luring them away with his music and then, when he was not paid for his services, lured away its children

the principle that a noun phrase may take with it the rest of a prepositional phrase or a larger noun phrase in which it is contained, when moved in a transformation . For example , when the interrogative pronoun is moved to initial position, other words are moved too, as in to whom did you speak ?

a British songbird , Motacilla alba yarrellii, with a black throat and back, long black tail , and white underparts and face: family Motacillidae ( wagtails and pipits )

A pied-à-terre is a small house or flat, especially in a town, which you own or rent but only use occasionally .

a small black and white migratory bird of Europe and western Asia, Ficedula hypoleuca

a common American grebe ( Podilymbus podiceps ) with a black band around its bill , except in the winter

a large New Zealand seabird , Phalacrocorax varius , with a white throat and underparts

→ the Pied Piper of Hamelin

a British songbird , Motacilla alba yarrellii, with a black throat and back, long black tail , and white underparts and face: family Motacillidae ( wagtails and pipits )

(in German legend ) a piper who rid the town of Hamelin of rats by luring them away with his music and then, when he was not paid for his services, lured away its children

a small greyish-brown North American grebe , Podilymbus podiceps, with a small bill