Enter a clue or pattern or both:
The Clue
Circular tube (6 letter answer)
The Answer
TOROID
Tags
Notes
The answer TOROID is so rare that it appears less than once every 2500 puzzles.
Related Clues
Donut, mathematically
Doughnut shape
Doughnut-shaped
Definition
TOROID as a noun:
1. the doughnut-shaped object enclosed by a torus
2. (torus, toroid) = a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle