Q. Calmacil m. “*Sword of Light, Shining Sword”
Tar-Calmacil was the Quenya name of 18th ruler of Númenor, also known as Ad. Ar-Belzagar (UT/222). This name seems to be a compound of cala “light” and macil “sword”.
References ✧ LotRI/Calmacil, Tar-Calmacil; PMI/Kalmakil; UTI/Ar-Belzagar, Tar-Calmacil