Noun
A young eel; a young conger or sea eel; -- called also elvene.
Source: Webster's dictionaryLancaster County, Neb. — An Endangered Missing Advisory was activated on Sunday afternoon by the Nebraska State Patrol to find Elver Benito, a one year old Hispanic male. Source: Internet
Mosse -"marsh-river-border"+ Elva -"see Elbe, Elver Old Norse for river" The name is thought to be very old and the meaning of it is not clear. Source: Internet