Pharos, Phari

Pharos, Phari (f) is the Latin name of the island at Alexandria on which Alexander the Great's successors the first two Ptolemys had a giant lighthouse built and of that lighthouse itself.  It is also by extension the Latin word for a lighthouse.  See the wikipedia entry Lighthouse of Alexandria for a short history of the Pharos.

Pharos is the origin of the cognate words for a lighthouse in several languages including in Greek (φάρος), Persian (Fānūs - فانوس), many Romance languages such as French (phare), Italian and Spanish (faro), Romanian (far) and Portuguese (farol), and even some Slavic languages like Bulgarian (far).