A law that is a large-scale attempt by a government to regulate business in the interest of society at large.

The half sister of one's spouse. / The wife of one's half-sibling. / The wife of the half-sibling of one's spouse.

(US, history) Any law that racially segregated public facilities and which was enacted in Southern and border states in the United States between 1876 and 1965.

(idiomatic, almost always preceded by the) The influence or effectiveness of law enforcement institutions; law enforcement officers collectively.

(logic) The statement that the negation of the negation of A implies A, for any proposition A. Stated symbolically: ¬¬A→A.

Alternative form of law of excluded middle

(logic) A logical principle which states all statements must be either true or false, i.e. in symbols: P∨¬P.

(uncommon) The mother of one's children-in-law; that is, the mother-in-law of one's children, or, the mother of one spouse in relation to the parents of the other spouse; either of two or more women whose children marry each other, such as the mother of a bride vis-à-vis the mother of the groom.

One's spouse's sister-in-law, especially one's husband's brother's wife, one's brother's wife in relation to the spouses of his siblings; either of two (or more) women who are married to brothers, in relation to the other.

A parent of one's son- or daughter-in-law, that is, a parent-in-law of one's son or daughter.