Learner's definition of PAYROLL
a list of the people who work for a company and the amount of money that the company has agreed to pay them
— often used before another noun
She's in charge of the company's payroll department. [=the department that is responsible for paying employees]
payroll deductions [=money that you earn but is not included in the pay you receive because it is used to pay your taxes, insurance costs, etc.]
— often used in the phrase on the payroll
Her company has over 3,000 employees on the payroll.
He's currently on the payroll of a small law firm.
the total amount of money that a company pays to all of its employees