Enter a clue or pattern or both:
The Clue
Impeding sylvan mass (10 letter answer)
The Answer
UNDERBRUSH
Tags
Notes
The answer UNDERBRUSH is so rare that it appears less than once every 2500 puzzles.
Definition
UNDERBRUSH as a noun:
1. (underbrush, undergrowth, underwood) = the brush (small trees and bushes and ferns etc.) growing beneath taller trees in a wood or forest