What is "nimrodel"

In J. R. R. Tolkien's fictional universe of Middle-earth, the name Nimrodel may refer to:

• Nimrodel, an elf who was lost while trying to reach her beloved.
• The Nimrodel, a river in Lothlórien near which Nimrodel dwelt.

Nimrodel is also a song on the album Mirage (1974) by English progressive rock band Camel.