noun one who marks the time in musical performances.
2. timekeeper ·noun a clock, watch, or other chronometer; a timepiece.
3. timekeeper ·noun one who gives the time for the departure of conveyances.
4. timekeeper ·noun a person who keeps, marks, regulates, or determines the time.
5. timekeeper ·noun a person who keeps a record of the time spent by workmen at their work.
6. timekeeper ·noun one appointed to mark and declare the time of participants in races or other contests.