noun.
A violent contest or struggle.
noun.
The struggle, frequently unconscious, that often precedes natural death: in this sense often used in the plural: as, he is in the agonies of death.
noun.
Extreme, and generally prolonged, bodily or mental pain; intense suffering; hence, intense mental excitement of any kind: as, the agony of suspense or uncertainty.
noun.
In a special sense, the sufferings of Christ in the garden of Gethsemane.