Tonsil
see Cerebellar tonsil.
Tonsils are also collections of lymphoid tissue facing into the aerodigestive tract. The set of lymphatic tissue known as Waldeyer's tonsillar ring includes the adenoid tonsil, two tubal tonsils, two palatine tonsils, and the lingual tonsil.
In glossopharyngeal neuralgia pain may be reduced by cocainization of tonsillar pillars and fossa.