Webster's Revised Unabridged Dictionary · 1913

Memnon

Memnon , noun

[Latin, from Greek {not transcribed}, lit., the Steadfast, Resolute, the son of Tithonus and Aurora, and king of the Ethiopians, killed by Achilles.]

(Antiquities) A celebrated Egyptian statue near Thebes, said to have the property of emitting a harplike sound at sunrise.