Cisterna labiorum posterior, also known as the posterior labial cistern, refers to a structure found in the female reproductive system. This anatomical feature is responsible for storing and lubricating the labia minora, ensuring their smooth movement during various activities. Synonyms for the term include posterior labial cistern, posterior labial reservoir, and labial lubrication depot. These interchangeable terms highlight the importance of this structure in maintaining the comfort and functionality of the female genitalia. Understanding the various synonyms for cisterna labiorum posterior helps medical professionals and researchers communicate effectively about this vital part of female reproductive health.