1. A ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age
   "The thymus gland plays a crucial role in the development of the immune system";
   - thymus

Derived forms: thymus glands

Type of: ductless gland, endocrine, endocrine gland

Part of: cervix, immune system, neck

Encyclopedia: Thymus gland