運転手
うんてんしゅ · untenshu · JLPT N4 · noun
driver
🚗 運転手 = carry + turn + hand: the hand that turns the wheel for a living
運転 (unten) means driving: 運 carry/transport + 転 turn/roll. 手 (shu) is hand, used as a suffix for a person who does a job, as in 歌手 singer or 選手 athlete. So 運転手 is the person whose job is driving.
手 — pictograph of a hand with five fingers
手 is a pictograph showing an open hand with fingers and a wrist. Early bronze and oracle bone forms clearly depict five splayed fingers, which simplified over time into the modern shape. It keeps its original meaning of 'hand' and also serves as a radical in many characters related to hand actions.