parapharyngeal space

noun

para·​pha·​ryn·​geal space -ˌfar-ən-ˈjē-əl-, -fə-ˈrin-j(ē-)əl- 

: a space bounded medially by the superior constrictor of the pharynx, laterally by the medial pterygoid muscle, posteriorly by the cervical vertebrae, and below by the muscles arising from the styloid process