Related Clues:
- Coldest possible temperature on the Kelvin scale
- Digit in binary code
- 'Beetle Bailey' soldier
- Not even a little
- Chilling reading
- Number of Super Bowls Dan Marino won
- No score
- Little Annie Rooney's dog
- Absolutely nothing
- 49-Across number, maybe
- 0%
- A round number ends in it
- Much-repeated part of binary code
- Centigrade freezing point
- Zip or zippo