Enter a clue or pattern or both:
The Clue
Rock cruster (6 letter answer)
The Answer
LICHEN
Tags
Notes
The answer LICHEN is so rare that it appears less than once every 2500 puzzles.
Related Clues
Rock growth
Definition
LICHEN as a noun:
1. any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
2. any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.