What is Arras?

Legal Definition
Span. law. The property contributed by the husband, ad sustinenda onera matrimonii, is called arras. The husband is under no obligation to give arras, but it is a donation purely voluntary. He is not permitted to give in arras more than a tenth of his property. The arras is the exclusive property of the wife, subject to the husband's usufruct during his life. Burge on the Confl. of Laws, 417.

2. By arras is also understood the donation which the husband makes to his wife, by reason or on account of marriage, and in consideration of the dote, or portion, which be receives from her. Aso & Man. Inst. h. t. 7, c. 3.
-- Bouviers Law Dictionary
Legal Definition
In Spanish law. The donation which the husband makes to his wife, by reason or on account of marriage, and in consideration of the dote or portion, which he receives from her. Miller v. Dunn, 62 Mo. 219; Cutter v. Waddingham, 22 Mo. 254.
-- Black's Law Dictionary
Legal Definition
A gift which a Spanish husband makes to his bride.
-- Ballentine's Law Dictionary