(law) The body of law dealing with the private relations between members of a community; it contrasts with criminal law, military law and ecclesiastical law.

(law) The area of law pertaining to crime and punishment. / (law) A specific statute, ordinance, regulation, or other source of law that deems an action to be a crime.

Someone's niece's husband / Someone's sibling's son-in-law / Someone's spouse's sibling's son-in-law / Someone's husband's nephew. (Usually called a nephew.)

(Britain, law) A former (1824–1981) law by which police officers were permitted to arrest anyone under suspicion of having committed a crime

Someone's nephew's wife. / Someone's sibling's daughter-in-law. / Someone's spouse's sibling's daughter-in-law. / Someone's husband's niece. (Usually called a niece.)

(chiefly UK) The principle that what can go wrong, will go wrong, usually with some observed degree of irony

An adage which states that if anything can go wrong, then it will.

Within the letter of the law but not the spirit of the law.

The Latin language as used in law and legal documents, being a mixture of Latin with Old French and Latinized English words. / (humorous, obsolete) Barbarous Latin.

(computing) An empirical observation that the density of transistors on a chip doubles every two years.