ci·cis·be·o 
(chē′chēz-bāō′)
(chē′chēz-bāō′)n. pl. ci·cis·be·i (-bāē′)
The male lover or companion of a married woman, especially in 18th-century Europe.
[Italian, of unknown origin.]
- Marcionite
- Marco
- Marconi
- Marconi rig
- Marco Polo
- Marcos
- Marcus
- Marcus
- Marcus Aemilius
- Marcus Annaeus Lucanus.
- Marcus Antonius.
- Marcus Aurelius
- Marcus Aurelius Antoninus
- Marcus Aurelius Antonius.
- Marcus Aurelius Claudius Gothicus.
- Marcus Cook
- Marcuse
- Marcus Fabius Quintilianus.
- Marcus Junius
- Marcus Licinius
- Marcus (Moziah) Aurelius
- Marcus Porcius
- Marcus Porcius
- Marcus Rothkowitz.
- Marcus Terentius