A collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx) WordNet 3.0 & Open English WordNet

In anatomy, the adenoid, also known as the pharyngeal tonsil or nasopharyngeal tonsil, is the superior-most of the tonsils. Wikipedia

A mass of lymphoid tissue in the pharynx Wikipedia Disambiguation

Type of tonsil Wikidata

One of two folds of lymphatic tissue covered by ciliated epithelium. They are found in the roof and posterior wall of the nasopharynx at the back of the throat behind the uvula. They may obstruct normal breathing and make speech difficult when swollen, a condition often called adenitis. Wiktionary

Folds of lymphatic tissue covered by ciliated epithelium. Wiktionary (translation)

An adenoid. Wiktionary

Pharyngeal tonsil. Wiktionary (translation)