first-degree murder

first-degree murder (countable and uncountable, plural first-degree murders)

1. (law, chiefly US, Canada) The criminal offence of murder in a form considered by law to be the most serious; the precise distinction may vary by jurisdiction but typically involves premeditation, or the choice of victim or other circumstances being regarded as especially blameworthy.
2. (law, chiefly US, Canada) An act that constitutes the crime of first-degree murder.

• murder in the first degree
• murder one

• felony murder

• murder
• second-degree murder

• first-degree murder on Wikipedia.Wikipedia
• “first-degree murder”, in OneLook Dictionary Search.