Related Clues:

• Pi's successor
• Dumb ox
• Pi-sigma go-between
• Letter from the Corinthians
• Extinct flightless bird
• Platonic P
• When said three times, a crew member's fraternity?
• Greek P
• Dull-witted one
• P, in Greek
• It's after pi
• Chi ___ (religious symbol)
• Fraternity chapter
• Stupid person
• Bird that is no more