(historical, Ancient Rome) client, retainer, follower (person who is under the patronage of someone else)

(accounting, chiefly in the plural) account receivable (amount recorded as being owed by a customer for sales on credit)

vassal state, client state (state that is economically, politically and/or militarily dependent on another, more powerful state)

the customer is always right

(informal, derogatory) according to a person's looks, arbitrarily

female equivalent of client

feminine plural of client