'Vocative' definitions:

Definition of 'vocative'

From: WordNet
adjective
Relating to a case used in some languages; "vocative verb endings"
noun
The case (in some inflected languages) used when the referent of the noun is being addressed [syn: vocative, vocative case]

Definition of 'Vocative'

From: GCIDE
  • Vocative \Voc"a*tive\, a. [L. vocativus, fr. vocare to call.] Of or pertaining to calling; used in calling; specifically (Gram.), used in address; appellative; -- said of that case or form of the noun, pronoun, or adjective, in which a person or thing is addressed; as, Domine, O Lord. [1913 Webster]

Definition of 'Vocative'

From: GCIDE
  • Vocative \Voc"a*tive\, n. [L. vocativus (sc. casus): cf. F. vocatif.] (Gram.) The vocative case. [1913 Webster]