What does "dog" mean?

See dog in WNW Idioms

a dog's age

Informal a long time

a dog's life

a wretched existence

dog in the manger

a person who keeps others from using something which that person is not using

dog it

Slang to fail to exert the maximum or expected effort

every dog has his day

something good or lucky happens to everyone at one time or another

go to the dogs

Informal to deteriorate; degenerate

let sleeping dogs lie

to let well enough alone; not disturb things as they are for fear of something worse

put on the dog

☆
Slang to make a show of being very elegant, wealthy, etc.

teach an old dog new tricks

to induce a person of settled habits to adopt new methods or ideas

the Greater Dog

the constellation Canis Major
also called the Big Dog

the Lesser Dog

the constellation Canis Minor
also called the Little Dog

See dog in American Heritage Dictionary 4 Idioms

dog it

Slang
To fail to expend the effort needed to do or accomplish something.

go to the dogs

To go to ruin; degenerate.

put on the dog

Informal
To make an ostentatious display of elegance, wealth, or culture.

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