Emily Dickinson Lexicon

BOAST, v.t.

1. To display in ostentatious language; to speak of with pride, vanity or exultation, with a view to self-commendation. Lest men should boast their specious deeds. – Milton.
2. To magnify or exalt. They boast themselves in the multitude of their riches. – Ps. xlix.
3. To exult in confident expectation. Boast not thyself of to-morrow. – Prov. xxvii.