A variant form of Ilk. Thorntor, a combination of tôr “king” and the genitive plural of thorn “eagle” (Ety/THOR).
Doriathrin
thorntor
masculine name. King of Eagles
torthurnion
masculine name. King of Eagles
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
Ilkorin name for N. Thorondor appearing in The Etymologies from the 1930s, translated “King of Eagles” (Ety/THOR). It is a combination of thorn “eagle” and tôr “king”.