What is the meaning of Doghouse?

Any small house or structure or enclosure used to house a dog.

A structure of small size, similar to a doghouse, but offering useful shelter for a human.

Mechanically, an equipment cover with an opening, with a shape resembling a doghouse.

A difficult or demoralizing situation.

A traffic signal with five sections: two on the bottom, two in the middle, and one on top.

Any shabby or disreputable establishment.

Source: wiktionary.org