What does the word 'time-server' mean?Thanks.

What does the word 'time-server' mean?Thanks.
There are three meanings
the first is:a person who does as little work as possible in their job because they are just waiting until they leave for another job or retire.(the Chinese meaning:混日子的人）
the second meaning is:drift ( Chinese:随波逐流的人)
the third meaning:the followers of the rich and powerful(趋炎附势的人)