What is the meaning of мене?

full form of the first-person singular pronoun in the accusative case, used as the direct object of a verb; me

the first-person singular pronoun in the prepositional case, used as the object of a preposition; me

full form of the first-person singular pronoun in the dative case, used as the indirect object of a verb; to me, for me, me

Long direct object form of јас (jas).

Long indirect object form of јас (jas).

genitive of азъ (azŭ)

accusative of ꙗзъ (jazŭ): me

genitive of ꙗзъ (jazŭ): of me

genitive of ꙗꙁъ (jazŭ): of me

accusative of ꙗꙁъ (jazŭ): me

dative/prepositional singular of ме́на (ména)

of me (genitive singular of ја̑ (I))

me (accusative singular of ја̑ (I))

genitive/accusative of я (ja)

Source: wiktionary.org