The Clue
___ Test-Ban Treaty: 1974 (9 letter answer)
The Answer
THRESHOLD
Tags
Notes
The answer THRESHOLD is so rare that it appears less than once every 2500 puzzles.
Definition
THRESHOLD as a noun:
1. the starting point for a new state or experience; "on the threshold of manhood"
2. (threshold, limen) = the smallest detectable sensation
3. (doorway, door, room access, threshold) = the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway"
4. (doorsill, doorstep, threshold) = the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway
5. (brink, threshold, verge) = a region marking a boundary