What does announce mean?
The definition of announce
An*nounce”, v. t.
[imp. & p. p. Announced; p. pr. & vb. n.Announcing.]
Etym: [OF. anoncier, F. annoncer, fr. L. annuntiare; ad + nuntiare to report, relate, nuntius messenger, bearer of news. See Nuncio, and cf. Annunciate.]

1 To give public notice, or first notice of; to make known; to publish; to proclaim. Her [Q. Elizabeth’s] arrival was announced through the country by a peal of cannon from the ramparts. Gilpin.
2 To pronounce; to declare by judicial sentence. Publish laws, announce Or life or death. Prior.

Synonyms
— To proclaim; publish; make known; herald; declare; promulgate.
— To Publish, Announce, Proclaim, Promulgate. We publish what we give openly to the world, either by oral communication or by means of the press; as, to publish abroad the faults of our neighbors. We announce what we declare by anticipation, or make known for the first time; as, to announce the speedy publication of a book; to announce the approach or arrival of a distinguished personage. We proclaim anything to which we give the widest publicity; as, to proclaim the news of victory. We promulgate when we proclaim more widely what has before been known by some; as, to promulgate the gospel.