What is the meaning of Dog?

A mammal of the family Canidae:

2. The species Canis familiaris (sometimes designated Canis lupus familiaris), domesticated for thousands of years and of highly variable appearance because of human breeding.

   The species Canis familiaris (sometimes designated Canis lupus familiaris), domesticated for thousands of years and of highly variable appearance because of human breeding.

   Any member of the family Canidae, including domestic dogs, wolves, coyotes, jackals, foxes, and their relatives ; canid.

   A male dog, wolf, or fox, as opposed to a bitch or vixen.

   The meat of this animal, eaten as food.

   A person:

   1. A dull, unattractive girl or woman.

      A dull, unattractive girl or woman.

      A man, guy, chap.

      Someone who is cowardly, worthless, or morally reprehensible.

      A sexually aggressive man.

      A mechanical device or support:

      1. Any of various mechanical devices for holding, gripping, or fastening something, particularly with a tooth-like projection.
      3. A click or pallet adapted to engage the teeth of a ratchet wheel, to restrain the back action.

         Any of various mechanical devices for holding, gripping, or fastening something, particularly with a tooth-like projection.

         A click or pallet adapted to engage the teeth of a ratchet wheel, to restrain the back action.

         A metal support for logs in a fireplace.

         A double-ended side spike driven through a hole in the flange of a rail on a tramway.

         The eighteenth Lenormand card.

         A hot dog: a frankfurter, wiener, or similar sausage; or a sandwich made from this.

         An underdog.

         Foot; toe.

         (from "dog and bone") Phone or mobile phone.

         One of the cones used to divide up a racetrack when training horses.

         Something that performs poorly.

         A flop; a film that performs poorly at the box office.

         A cock, as of a gun.

         A dance having a brief vogue in the 1960s in which the actions of a dog were mimicked.

         To pursue with the intent to catch.

         To follow in an annoying or harassing way.

         To fasten a hatch securely.

         To watch, or participate, in sexual activity in a public place.

         To intentionally restrict one's productivity as employee; to work at the slowest rate that goes unpunished.

         To criticize.

         To divide (a watch) with a comrade.

         Of inferior quality; very bad. (Can we add an example for this sense?)

         Alternative form of dag (preterite of dink)

         dog

         dog

         dog

         however

         though

         dog

         dog

         Alternative form of 鳩 / 鸠 (gau1)

         Alternative form of 鳩 / 鸠 (gau1)

         The name of the Latin-script letter D/d.

         however

         Conveying impressedness, emotional affectation, bewilderment.

         though

         a large dog, especially one of certain breeds

         thump, dub

         mastiff

         Alternative form of dogue

         mastiff

         past indicative of dö

         dog

         Source: wiktionary.org