Emily Dickinson Lexicon

A-VER'MENT, n. [See Aver.]

1. Affirmation; positive assertion; the act of averring.
2. Verification; establishment by evidence. – Bacon.
3. In pleading, an offer of either party to justify or prove what he alledges. In any stage of pleadings, when either party advances now matter, he avers it to be true, and concludes with these words, “and this he is ready to verify.” This is called an averment. – Blackstone.