1a person or organization using the services of a lawyer or other professional person or company:insurance tailor-made to a client’s specific requirements
a person being dealt with by social or medical services:a client referred for counselling
2 Computing (in a network) a desktop computer or workstation that is capable of obtaining information and applications from a server:workstation clients are going to be easy to install
(also client application or program) a program that is capable of obtaining a service provided by another program:friendly client programs like this enable you to perform complicated actions in just a mouse press or two
3(in ancient Rome) a plebeian under the protection of a patrician.