capstan
noun [ C ] uk/ˈkæp.stən/ us/ˈkæp.stən/
绞盘;（尤指）起锚机
a machine with a spinning vertical cylinder that is used, especially on ships, for pulling heavy objects with a rope
（录音机的）主动轮，输带轴
a thin, spinning cylinder in a tape recorder (= a machine that records and plays back sound) that pulls the tape through the machine