third tonsil(n = noun.body) adenoid, luschka's tonsil, pharyngeal tonsil, tonsilla adenoidea, tonsilla pharyngealis - a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx); "hypertrophy of the pharyngeal tonsils is called adenoids"; "enlarged adenoids may restrict the breathing of children"
is a kind of lymphatic tissue, lymphoid tissue
is a part of pharynx, throat

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