<p><strong>Noun</strong></p><ul><li>A domesticated canid, Canis familiaris, bred in many varieties.</li><li>Canid (def).</li><li>Any carnivore of the dog family Canidae, having prominent canine teeth and, in the wild state, a long and slender muzzle, a deep-chested muscular body, a bushy tail, and large, erect ears.</li><li>The male of such an animal.</li><li>Any of various animals resembling a canid.</li><li>Informal: a fellow: You've got a lovely family, you lucky dog.</li><li>Security was patting down the concertgoers, but that sly dog snuck a camera in.</li><li>Slang: an ugly, despicable, boring, or crude person: I had high hopes for this date, but he turned out to be a dog.</li><li>Slang: something worthless or of extremely poor quality: That used car you bought is a dog.</li><li>An utter failure; flop: Critics say his new play is a dog.</li><li>Slang: hot dog.</li><li>Dog, Astronomy: either of two constellations, Canis Major or Canis Minor.</li><li>Dogs, Slang: feet: I couldn't wait to get home and take off my shoes—my dogs were killing me.</li><li>Machinery: any of various mechanical devices, as for gripping or holding something.</li><li>A projection on a moving part for moving steadily or for tripping another part with which it engages.</li><li>Also called gripper, nipper.</li><li>Metalworking: a device on a drawbench for drawing the work through the die.</li><li>A clamp binding together two timbers.</li><li>An iron bar driven into a stone or timber to provide a means of lifting it.</li><li>A firedog; andiron.</li><li>Meteorology: a sundog or fogdog.</li><li>A word formerly used in communications to represent the letter D.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>Dogged, dog·ging: to follow or track like a dog, especially with hostile intent; hound: After the film, the actor was dogged by paparazzi.</li><li>To cause persistent problems or distress; haunt; plague: She was dogged by a sense of guilt over her part in the scandal.</li><li>To drive or chase with a dog or dogs.</li><li>Machinery: to fasten with dogs: They put the helmet on his head and dogged it to the gasket with the turnbuckles.</li></ul>