Hound
n.

    1. A domestic dog of any of various breeds commonly used for hunting, characteristically having drooping ears, a short coat, and a deep resonant voice.
    2. A dog.
  1. A contemptible person; a scoundrel.
    1. One who eagerly pursues something: a gossip hound.
    2. A devotee or an enthusiast: a coffee hound.

tr.v.hound·edhound·inghounds.

  1. To pursue relentlessly and tenaciously. 
  2. To urge insistently; nag: hounded me until I agreed to cut my hair.
    (from Old English Hund