It's a ships name - most, if not all Japanese vessels end with the suffix maru.
maru means round in japanese ships
You may say 'maru.'
Do you mean Orochimaru? Orochi = Large Serpent Maru = common male japanese name.
The word maru can have several meanings. The word maru can refer to several villages in Romania. It can be also used referring to Japanese ships distinguishing them between regular craft and war craft.
Japanese battleship Kaiyō Maru ended in 1869.
Japanese warship Kanrin Maru ended in 1871.
Japanese barque Kankō Maru ended in 1876.
Japanese barque Kankō Maru was created in 1853.
Japanese warship Shohei Maru was created in 1854-12.
Japanese battleship Kaiyō Maru was created on 1866-09-10.
Japanese seaplane tender Kamikawa Maru was created on 1937-09-18.
Japanese seaplane tender Kiyokawa Maru was created on 1941-10-05.