a person or group that uses the professional advice or services of a lawyer, accountant, advertising agency, architect, etc.
a person who is receiving the benefits, services, etc., of a social welfare agency, a government bureau, etc.
anyone under the patronage of another; a dependent.
Computers. a workstation on a network that gains access to central data files, programs, and peripheral devices through a server.
(in ancient Rome) a plebeian who lived under the patronage of a patrician.