Английский разговорный словарь (основной) - vocative
Vocative
vocative
ˈvɔkətɪv n. & adj. Gram. --n. the case of nouns, pronouns, and adjectives used in addressing or invoking a person or thing. --adj. of or in this case. [ME f. OF vocatif -ive or L vocativus f. vocare call]