Across
- 4. The most important or principal part of something
- 6. An idiom for a very small amount
- 9. One of the four cardinal directions
- 10. Known as the "Venice of the North"
- 11. Found between Brussels and Antwerp
- 12. A Greek letter that resembles the English letter Y
Down
- 1. Birthplace of saxophone inventor
- 2. The 21st letter of the Greek alphabet
- 3. Represents a wavelength
- 5. City and province in Belgium
- 7. Means "small o", has a value of 70
- 8. Has the most pools on campus