What is the meaning of Longhouse?

A long communal housing of the Iroquois and some other American Indians, the Malaysians, the Indonesians, the Vikings, and many other peoples.

An outhouse: an outbuilding used for urination and defecation.

In certain strains of far-right thought: the modern society, perceived as matriarchal, and therefore stifling non-conformity and masculine values.

Source: wiktionary.org