1 a person using the services of a lawyer, architect, social worker, or other professional person.
2 a customer.
3 Rom.Hist. a plebeian under the protection of a patrician.
4 archaic a dependant or hanger-on.
Derivatives:
clientship n.
Etymology: ME f. L cliens -entis f. cluere hear, obey
Useful english dictionary. 2012.