Noun thymus has 2 senses
  1. Thymus, genus Thymus - large genus of Old World mints: thyme
    --1 is a kind of asterid dicot genus
    --1 is a member of
     Labiatae, family Labiatae, Lamiaceae, family Lamiaceae, mint family
    --1 has members: thyme
  2. thymus gland, thymus - a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age
    --2 is a kind of endocrine gland, endocrine, ductless gland
    --2 is a part of neck, cervix; immune system
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