Kornoldorin
From Tolkien Gateway
Kornoldorin, 'Old Noldorin', or Korolambë, 'Tongue of Kôr', was the language of the Noldor in Valinor. The Noldor used it beside Quenya, but unlike Quenya, it changed fast as the Noldor deviced new words and structures by themselves.
References: The Lost Road and Other Writings: Lhammas §5; The Etymologies, page 347.
