According to Britannica Concise Encylopedia, Dowry means, Money, goods, or estate that a woman brings to her husband in marriage. The dowry has a long history in Europe, South Asia, Africa, and other parts of the world. Some of its basic functions are to protect the wife against ill treatment by her husband, since a dowry can be a conditional gift; to help the husband discharge the responsibilities of marriage, since the dowry makes it possible for the young man to establish a household; to provide the wife with support in case of her husband's death; and to compensate the groom's kin for their payment of bride wealth. In Europe, the dowry served to build the power and wealth of great families and played a role in the politics of grand alliance through marriage. The giving of a dowry more or less disappeared in Europe in the 19th and 20th centuries. The practice grew, however, in South Asia. In some cases, delayed or insufficient dowry made some young wives the victims of murder by their husbands or in-laws, a practice known as "bride burning" or "dowry death."
In India: Definition of Dowry is provided under Section 2 Dowry prohibition Act, 1961 [ 28 of 1961] Section 2:- In this act, ‘Dowry” means any property or valuable security given or agreed to be given either directly or indirectly- (a) by one part to a marriage to the other party to the marriage; or (b) by the parents of either party to a marriage or by any other person, to either party to the marriage or to any other person;
At or before [ or any time after the marriage] [in connection with the marriage of the said parties, but does not include ] dower or mahir in the case of persons to whom the muslim Personal Law (Shariat) applies.
Explanation II- The expression “Valuable security” has the same meaning as in section 30 of the Indian Penal code (45 of 1860)