Enter a clue or pattern or both:
The Clue
160, once (3 letter answer)
The Answer
CLX
Tags
Notes
The answer CLX is so rare that it appears less than once every 2500 puzzles.
Related Clues
160, to Caesar
XX times VIII
Definition
CLX as an adjective:
1. (one hundred sixty, 160, clx) = being ten more than one hundred fifty