rouster
/ˈraʊstər/
noun
- A person who rouses or stirs others up, especially a worker who wakes up or organizes other workers.
- He was known as the rouster because he always got everyone moving at dawn.
- The camp rouster blew a whistle to signal the start of the workday.
- The rouster went from bunk to bunk, waking the crew for the morning shift.