thymus gland

Thesaurus

Noun

1.

thymus gland - a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age thymus ductless gland, endocrine gland, endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream immune system - a system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response cervix, neck - the part of an organism (human or animal) that connects the head to the rest of the body; "he admired her long graceful neck"; "the horse won by a neck"