A dog used to protect a property or its owner.

A dog trained and employed by the police to pursue suspects or sniff out contraband. / (dated) Synonym of German shepherd

A large number of people; most people.

Alternative spelling of seadog

Alternative spelling of seadog

One of the dog days of summer: a late-summer day.

Alternative spelling of doghouse

(UK, Australia, New Zealand, Canada, idiomatic) An unappealing mixture; a disorderly situation; a mess. / Used other than figuratively or idiomatically: see dog, breakfast.

(idiomatic) Someone who denies to others something that he or she cannot use.

Used other than figuratively or idiomatically: see yellow, dog. / (US, especially Southern US) A Carolina dog. / (US, informal) An item or person of low value.