What does acerinus mean in Latin?

acerinus, a adjective, means “maple”.

How do you pronounce acerinus?

In classical Latin, [aˈkɛ.rɪ.nʊs]; in ecclesiastical (church) Latin, [aˈt͡ʃɛː.ri.nus].

adjectivefirst/second-declension adjective

acerinus (feminine acerina, neuter acerinum)

Classical[aˈkɛ.rɪ.nʊs]Ecclesiastical[aˈt͡ʃɛː.ri.nus]

singular
form	masculine	feminine	neuter
nominative	acerinus	acerina	acerinum
genitive	acerinī	acerinae	acerinī
dative	acerinō	acerinae	acerinō
accusative	acerinum	acerinam	acerinum
ablative	acerinō	acerinā	acerinō
vocative	acerine	acerina	acerinum

plural
form	masculine	feminine	neuter
nominative	acerinī	acerinae	acerina
genitive	acerinōrum	acerinārum	acerinōrum
dative	acerinīs	acerinīs	acerinīs
accusative	acerinōs	acerinās	acerina
ablative	acerinīs	acerinīs	acerinīs
vocative	acerinī	acerinae	acerina

From acer (“maple”).