• perārius

pirum (“a pear [fruit]”) +‎ -ārius

• (Classical Latin) IPA^(key): [pɪˈraː.ri.ʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [piˈraː.ri.us]

pirārius m (genitive pirāriī or pirārī); second declension

1. (Medieval Latin) a pear-tree

Second-declension noun.

¹Found in older Latin (until the Augustan Age).

• (a pear-tree): pirus (Classical Latin)

• "pirarius", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• Jan Frederik Niermeyer, Mediae Latinitatis Lexicon Minus : Lexique Latin Médiéval–Français/Anglais : A Medieval Latin–French/English Dictionary, fascicle I (1976), page 798/1, “pirarius”