Enter a clue or pattern or both:
The Clue
Certain bridge holdings (10 letter answer)
The Answer
SINGLETONS
Tags
Notes
The answer SINGLETONS is so rare that it appears less than once every 2500 puzzles.
Definition
SINGLETON as a noun:
1. a single object (as distinguished from a pair)
2. a set containing a single member
3. the playing card that is the only card in a suit held in a bridge hand as initially dealt