The part of the poem where the line is from is in the extended version found on the internet.
Perhaps that answers your own question?
Edit: Look at Chapter 15
The Gathering of the Clouds of "The Hobbit" to find the correctly spelled version of that verse.
Edit 2: Beware that it is not the 'extended' version of the Song of the Dwarves, but a compilation of two Dwarf-songs (see "The Hobbit") and one made by Merry and Pippin (see "The Lord of the Rings" - Book I - Chapter V -
A Conspiracy Unmasked). These three are presumably based on the same tune (although I personally doubt the second one is).