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”.
Doriathrin
torthurnion
masculine name. King of Eagles
thorntor
masculine name. King of Eagles
A variant form of Ilk. Thorntor, a combination of tôr “king” and the genitive plural of thorn “eagle” (Ety/THOR).