#prod__goad  a pointed instrument used to prod into motion
  supertype:  device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  gad__spur  a sharp prod fixed to a rider's heel and used to urge a horse onward; "cowboys know not to squat with their spurs on"

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