Wiktionary
n. 1 An act of murder of a particular quality. 2 (context legal English) The crime of murder of a particular quality. 3 # (context under New Hampshire legal English) The crime of (while over 18) knowingly causing the death of an law enforcement or judicial officer in the line of duty; or of another person (not including a fetus) before, after or during actual or attempted commission of kidnapping, sexual assault, burglary or certain other offenses, or after being sentenced to life imprisonment without parole, or by criminally soliciting a third person to cause the death or as a result of having been solicited by a third person.New Hampshire statutes, Title LXII,
Wikipedia
Capital murder was a statutory offence of aggravated murder in Great Britain and Northern Ireland and the Republic of Ireland. In the United States, a capital murder is any murder that makes the perpetrator eligible for the death penalty.
Usage examples of "capital murder".
He asked the jurors to find Misskelley guilty of three counts of capital murder, a verdict that would allow the state of Arkansas to execute him.
In situations where the subject is facing a possible capital murder conviction, getting an outright confession is going to be difficult.