1a dog of a breed used for hunting, especially one able to track by scent: a hound came running through the trees, nose to the ground [with modifier] a person eagerly seeking something:he has a reputation as a publicity hound informal
, dated a despicable or contemptible man.
2used in names of dogfishes, e.g. nurse hound, smooth hound.
harass, persecute, or pursue relentlessly:she was hounded by the Italian press his opponents used the allegations to hound him out of office