winch       
noun [ C ] uk/wɪntʃ/ us/wɪntʃ/ (also windlass)
 绞车;卷扬机
a machine that lifts heavy objects by turning a chain or rope around a tube-shaped device
  Winches powered by electric motors launched the gliders into the air.
 This old steam winch was used to pull things up on shore in days gone by. 
 - More examples
 - They used a boat winch to crank the beast into the truck.
 - The helicopter was hovering above us and they dropped a winch down.
 - He is credited with inventing the hand-cranked winch, a labour-saving device for hoisting sails.