(n) :
a contrivance, turning on a vertical axis by a handle or winch, and giving a circular motion to the ore to be washed; a stirrer; a tool with an indented head for shaping the head of a rivet
(n) :
a contrivance, turning on a vertical axis by a handle or winch, and giving a circular motion to the ore to be washed; a stirrer; a tool with an indented head for shaping the head of a rivet