Related Clues:
- X-like Greek letter
- Sigma's predecessor
- Loop locale, informally
- Half of a classic religious symbol
- Another fraternity letter
- Sorority character
- Vital life force, to acupuncturists
- Greek letter that sounds like the end of 16-, 22-, 36-, 47- or 58-Across
- Sox, in line scores
- Letter after 31-Down
- See 111-Down
- Seventeenth letter of the Greek alphabet
- 17th letter of the Greek alphabet
- Feng shui 'energy'
- Frat-house X