the GNU version of the Collaborative International Dictionary of English
n. A brothel; a bawdyhouse; a house devoted to prostitution.
The Century Dictionary and Cyclopedia
n. A brothel; a bawdy-house; a house devoted to prostitution.
Word Usage
"The prefix fi - adds the idea of shamefulness to what follows, thus producing this easily understandable result, synonymous with the more usual Esperanto term bordel (o)."