Emily Dickinson Lexicon

MAT-RI-MO'NI-AL, a. [It. matrimoniale. See Matrimony.]

1. Pertaining to marriage; connubial; nuptial; hymeneal; as, matrimonial rights or duties.
2. Derived from marriage. If he relied on that title, he could be but a king at curtsey; and have rather a matrimonial, than a regal power. Bacon.