Definition:-

• A person or thing that carries, holds, or conveys something. (noun)
• A person or company that undertakes the professional conveyance of goods or people. (noun)
• A person or animal that transmits a disease-causing organism to others. Typically, the carrier suffers no symptoms of the disease. (noun)
• A substance used to support or convey another substance such as a pigment, catalyst, or radioactive material. (noun)