A web site doing e-commerce through the darknet.

(informal) Resembling vomit in colour, texture, etc. / (informal) Inclined to vomit; sick.

A multicellular motile body found in the gastrovascular cavity of the sea anemone Nematostella / A particular organelle found in certain neurons, consisting of threadlike structures.

That can be impugned; open to (verbal) attack, open to question.