hound 
(hound)
(hound)n.
1.
a. A domestic dog of any of various breeds commonly used for hunting, characteristically having drooping ears, a short coat, and a deep resonant voice.
b. A dog.
2. A contemptible person; a scoundrel.
3.
a. One who eagerly pursues something: a gossip hound.
b. A devotee or an enthusiast: a coffee hound.
tr.v. hound·ed, hound·ing, hounds
1. To pursue relentlessly and tenaciously: The suspect was hounded by the police for weeks.
2.
a. To make repeated demands of or subject to persistent criticism: Her parents hounded her until she agreed to look for a better job. See Synonyms at harass.
b. To pressure or force from a place or situation: accusations that hounded him out of office.
[Middle English, from Old English hund; see kwon- in the Appendix of Indo-European roots.]
hounder n.