Noun reindeer lichen has 1 sense
  1. reindeer moss, reindeer lichen, arctic moss, Cladonia rangiferina - an erect grayish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans
    --1 is a kind of lichen
    --1 is a member of Cladonia, genus Cladonia
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