Meaning
Any of many symbiotic organisms, being associations of algae and fungi, often found as white or yellow-to-blue–green patches on rocks, old walls, etc.
Etymology
Origin: Latin
Borrowed from Latin līchēn, from Ancient Greek λειχήν (leikhḗn), from λείχω (leíkhō, “to lick”). Originally used of liverwort; the modern sense first recorded 1715.
Synonyms & Antonyms
NYT Puzzle Appearances
Accepted in 1 recorded puzzle: