Pi Ball

A game that combines frisbee and dodgeball that was invented on Pi Day.

Let's go play Pi Ball this weekend!

by 3.1415iscool March 15, 2010

Pi Ball

A small helium filled party balloon released at Hot Air Balloon launch fields in order to determine wind speed and direction from the launch area prior to launching the Hot Air Balloon(s).

The Hot Air Balloon pilots released a pi ball in order to determine the winds before flight.

by Ima314lot February 23, 2023