Retropharyngeal means behind the pharynx (throat).

The retropharyngeal spaces is a potential space between the pretracheal and prevertebral fascia of the neck.

The pretracheal fascia lies anterior to the spine and is enclosed with the investing fascia of the neck. The prevertebral fascia encloses the musculature of the spine.

A blind abscess is an abscess with no external opening.

A Bartholin abscess is an abscess located in the Bartholin's gland.

An abscess behind the tonsils is a retrotonsillar abscess.