shifter

/ˈʃɪftər/
noun
  1. A device used to change gears in a vehicle or machine.
    • He pushed the shifter into first gear and drove away.
    • My car has a manual shifter, not an automatic one.
    • The bike's shifter clicked smoothly as she changed speeds.
  2. A person who works a particular shift, especially in a factory or service job.
    • Each shifter must clock in at the start of their scheduled time.
    • The factory employs three shifters to keep production running 24 hours.
    • The night shifters arrived just as the day crew was leaving.
  3. A person or thing that changes or moves something from one place or state to another.
    • The software acts as a data shifter, moving files between folders automatically.
    • He was known as a shifter of blame, never taking responsibility.
    • She is a real shifter of furniture, always rearranging the living room.