The dog is distinguished above all others of the inferior animals for intelligence, docility, and attachment to man. There are numerous carefully bred varieties, as the beagle, bloodhound, bulldog, coachdog, collie, danish dog, foxhound, greyhound, mastiff, pointer, poodle, St. Bernard, setter, spaniel, spitz dog, terrier, etc. There are also many mixed breeds, and partially domesticated varieties, as well as wild dogs, like the dingo and dhole. (see these names in the Vocabulary)
3. A fellow; used humorously or contemptuously; as, a sly dog; a lazy dog.
6. (Science: mechanics) a grappling iron, with a claw or claws, for fastening into wood or other heavy articles, for the purpose of raising or moving them. An iron with fangs fastening a log in a saw pit, or on the carriage of a sawmill.
8. To hunt or track like a hound; to follow insidiously or indefatigably; to chase with a dog or dogs; to worry, as if by dogs; to hound with importunity. I have been pursued, dogged, and waylaid. (Pope) Your sins will dog you, pursue you. (Burroughs) Eager ill-bred petitioners, who do not so properly supplicate as hunt the person whom they address to, dogging him from place to place, till they even extort an answer to their rude requests. (South)
dog is used adjectively or in composition, commonly in the sense of relating to, or characteristic of, a dog. It is also used to denote a male; as, dog fox or g-fox, a male fox; dog otter or dog-otter, dog wolf, etc.; also to denote a thing of cheap or mean quality; as, dog latin. A dead dog, a thing of no use or value. A dog in the manger, an ugly-natured person who prevents others from enjoying what would be an advantage to them but is none to him.
(Science: botany) dog cabbage, or dogs cabbage, any species of univalve shells of the family Nassidae, especially. The nassa reticulata of England. To give, or throw, to the dogs, to throw away as useless. Throw physic to the dogs; ill none of it. . To go to the dogs, to go to ruin; to be ruined.