(law) A law that exempts from legal liability a person who attempts to give reasonable aid to another person who is injured, ill, or otherwise imperiled.

(law) The law as a set of specific concrete rules set down by longstanding precedents.

(statistics) The statistical tendency toward a fixed ratio in the results when an experiment is repeated a large number of times; law of averages.

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.

plural of Good Samaritan law

plural of Jim Crow law

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