pi

PRONUNCIATION:
(py)

MEANING:
noun:
1. A confused mixture, originally a jumble of printing types. Also spelled as pie.
2. The 16th letter of the Greek alphabet.
3. A mathematical constant (approximately 3.14159), representing the ratio of the circumference of a circle to its diameter.

ETYMOLOGY:
For 1: Origin uncertain. Earliest documented use: 1659.
For 2, 3: From Greek pi/pei, of Semitic origin. Earliest documented use: 1425.

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PU - half a platter of American Chinese appetizers