bandog

noun5

1. •
   A type of large, ferocious dog, bred by crossing American pit bull terriers with Neapolitan mastiffs.
2. •
   A despicable person; a reprobate.

   • ‘For what cess or tallage comes these bandogs to Fitz Peascod Castle?’ — 1936
3. •
   (literary, figurative) Something that or someone who pursues doggedly.
4. •
   (no longer used) A dog that has been tied up; a mastiff or other kind of guard dog.

   • The horsemen spreading themselves along the side of the cover, waited untill the keeper entered, leading his ban-dog; a large blood-hound tied in a leam or band, from which he takes his name. — 1808
5. •
   (slang, no longer used) A bailiff or prison guard.