A more thorough explanation:

First-degree is an adjective that describes a level of seriousness or classification. It can refer to:

1. A measure of guilt or negligence in a crime, with first-degree being the most serious level. For example, murder in the first degree is premeditated and intentional.
2. A stage in a process or a step in a series of steps towards an end. For example, a statute may go through several degrees of development before becoming law.
3. A level of intensity or skill. For example, a high degree of legal skill is required for certain cases.
4. A measure of blood or marital relationship in the line of descent. For example, a council member may not participate in a vote if they are related to one of the bidders within the first degree of consanguinity.
5. A title conferred on a graduate of a school, college, or university, either after the completion of required studies or in honor of special achievements. For example, someone who receives a law degree can begin studying for the bar exam.

For example, if someone is charged with murder in the first degree, it means they intentionally planned and carried out the killing. Another example is if a student receives a degree in engineering, it means they have completed the required studies and earned a title in that field.