Noah Webster
Immortal
IMMOR'TAL, adjective [Latin immortalis. See Mortal.]
1. Having no principle of alteration or corruption; exempt from death; having life or being that shall never end; as an immortal soul.
To the King eternal, immortal invisible, the only wise God, be honor and glory forever. 1 Timothy 1:17.
2. Never ending; everlasting; continual.
I have
Immortal longings in me.
3. Perpetual; having unlimited existence.
A corporation is called an immortal being.
4. Destined to live in all the ages of this world; imperishable; as immortal fame.
So Homer is called the immortal bard.