A more thorough explanation:

Definition: Salarium (s-lair-ee-um) is a Latin word that means "salt money." It has several meanings:

1. In Roman law, salarium was an allowance given to people in noble professions, such as teachers and doctors, who were not allowed to charge fees. This allowance was meant to cover their living expenses.
2. In Roman law, salarium was also used to refer to wages paid to people who were engaged in military service on an emergency basis.
3. In history, salarium was the rent or profits earned from a hall or house.

For example, a teacher in ancient Rome might receive a salarium to cover their living expenses, since they were not allowed to charge fees for their services. Similarly, a soldier who was called up for emergency military service might receive a salarium as their wages.

The concept of salarium is similar to modern-day salaries, which are paid to employees to cover their living expenses and compensate them for their work.