Enter a clue or pattern or both:
The Clue
Sail at the America's Cup (9 letter answer)
The Answer
SPINNAKER
Tags
Notes
The answer SPINNAKER is so rare that it appears less than once every 2500 puzzles.
Definition
SPINNAKER as a noun:
1. a large and usually triangular headsail; carried by a yacht as a headsail when running before the wind