donkey den
n.— «A Tijuana “donkey den” refers to a brothel where men pay to see women have sex with animals. Such places are also known to participate in sexual slavery and trafficking of women.» —Boycott the Donkey Den (Denver, Colo.) Mar. 26, 2005. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...