reindeer lichen

Từ điển WordNet v3.1 - WordNet Dictionary

noun

an erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans
• Syn:
reindeer moss, arctic moss, Cladonia rangiferina
• Hypernyms:
lichen
• Member Holonyms:
Cladonia, genus Cladonia