Meaning of accusative

(adj) containing or expressing accusation; "an accusative forefinger"; "black accusatory looks"; "accusive shoes and telltale trousers"- O.Henry; "his accusing glare"

serving as or indicating the object of a verb or of certain prepositions and used for certain other purposes; "objective case"; "accusative endings"

(noun) the case of nouns serving as the direct object of a verb