All 3 Uses of

prodigal
in
The Iliad by Homer - (translated by: Pope)

I brave not heaven: but if the fruits of earth Sustain thy life, and human be thy birth, Bold as thou art, too prodigal of breath, Approach, and enter the dark gates of death.†
Book 6 *

Menestheus from on high the storm beheld Threatening the fort, and blackening in the field: Around the walls he gazed, to view from far What aid appear'd to avert the approaching war, And saw where Teucer with the Ajaces stood, Of fight insatiate, prodigal of blood.†
Book 12

Oft had the father told his early doom, By arms abroad, or slow disease at home: He climb'd his vessel, prodigal of breath, And chose the certain glorious path to death.†
Book 13

Definitions:

(1) (prodigal)
recklessly wasteful

or more rarely:

abundant (extravagant in amount)

or more rarely still:

long absent (someone who has been away a long time)
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

More rarely, prodigal is used as a noun as a shortened version of prodigal son to reference someone who is wasteful like the prodigal son in the famous Christian parable. When the prodigal son came home and apologized for his wasteful and ungrateful ways, his father forgave him, loved him, and celebrated the return.