curdog

noun4

1. •
   A cur
2. •
   (disapproving, no longer used) A contemptible, inferior, or cowardly dog.
3. •
   (offensive, no longer used) A person with these qualities.

   • Coward, go with thy Caitive soul, thou Cur Dog. — 1679
4. •
   (no longer used) A working or sheepdog

   • Thereto right well this Curdog by my coste (Meaning the Foxe) will serve, my sheepe to gather And drive to follow after their Belwether. — 1591