Enter a clue or pattern or both:
The Clue
Hard rubbers (8 letter answer)
The Answer
EBONITES
Tags
Notes
The answer EBONITES is so rare that it appears less than once every 2500 puzzles.
Definition
EBONITE as a noun:
1. (hard rubber, vulcanite, ebonite) = a hard nonresilient rubber formed by vulcanizing natural rubber