Available Definitions:
1) v. t. - To appeal to; to cite or claim as authority.
2) v. t. - To maintain a just or true; to vouch for.
3) v. t. - To declare or assert positively and as matter of fact; to affirm openly.
4) v. t. - To acknowledge deliberately; to admit; to confess; to sanction.
5) n. - Evidence; declaration.