clientele

clientele
/ˌkli:ənˈtel; ?@ ˌklaɪənˈtel; ˌklaɪən`tɛl/ n[Gp, U]
1 customers or clients as a group 顾客, 委托人（总称）
    an international clientele 国际顾客.
2 patrons of a theatre, restaurant, etc （剧院、 饭馆等的）顾客.

牛津英汉双解词典