Client (noun)

1. A person or organization using the services of a lawyer or other professional person or company.
2. A customer of a company or organization.
3. A computer connected to a network that can request and receive services or resources from a server.
4. A person who is receiving medical treatment.

Origin:

Late middle english (as a legal term): from old french client, from latin cliens "follower, dependent", from base of clinare "to incline".

Examples:

1. The lawyer advised his client to take the case to court.
2. The company has a large number of clients in the financial sector.
3. The client computer is unable to connect to the server.
4. The doctor checked on his client who was recovering from surgery.
5. She was the hairdresser's most demanding client.