A mass media company.

Dung, excrement. / (by extension) Dirt, filth. / (by extension) Something regarded as contaminating or perverting the morals; obscene material.

(volcanology, meteorology) Electrical discharge that occurs during a volcanic eruption, caused by a build-up of static electricity in colliding ejecta (such as ash and debris).

(mathematics, physics) Synonym of pentad