appointment/ ə'pɔɪntmənt /

1.noun [c] 
(arranged meeting) (in business,politics) 约会

2.noun
(with hairdresser,dentist,doctor) 预约

3.noun [c/u] 
(selection) 任命

4.noun [c] 
(post) 职务

to make an appointment (with sb)
(和某人)订一个约会
5.noun
(to see hairdresser,dentist,doctor) (和某人)预约

by appointment
根据预约