Glossary & References / Keywords List / Definitions:

Term to be defined Definition Synonyms & Keywords
Tonsil - "a small mass of lymphoid tissue, especially that found in close association with the mucous membrane of the throat; generally used alone to designate the palatine tonsil. Other structures referd to as tonsils are the cecal, lingual, esophageal, paraepiglottic, pharynx and tubal lymphoid aggregations." (B248)

-"a small mass of tissue." (B248)