2. A pirate who IS a pie.
3. The ever rising costs of pie.
4. One (most often a pierate) who has eaten an entire pier, mistaking it for a pie.
5. A ratio, approximately 1.15, equal to that of pi and e.
Examples of people badass enough to be pierates, though they aren't: Aron Ralston, John Hirsch, Sigurdur Petursson (may be a pierate, unconfirmed), Edward Teach, Grigori Rasputin