What does Boxing Day have to do with boxing?
"pertaining to the pharynx," 1799, from Modern Latin pharyngeus, from pharynx (see pharynx) + -al (1). Alternative pharyngal is attested from 1835, from Modern Latin pharyngem with -al (1) substituted.
pharyngeal pha·ryn·ge·al (fə-rĭn'jē-əl, -jəl, fār'ĭn-jē'əl) or pha·ryn·gal (fə-rĭng'gəl)adj. Of, relating to, located in, or coming from the pharynx.