What does agonize mean?
The definition of agonize
Ag”o*nize, v. i.
[imp. & p. p. Agonized; p. pr. & vb. n. Agonizing.]
Etym: [F. agoniser, LL. agonizare, fr. Gr. Agony.]

1 To writhe with agony; to suffer violent anguish. To smart and agonize at every pore. Pope.
2 To struggle; to wrestle; to strive desperately.

Ag”o*nize, v. t.
To cause to suffer agony; to subject to extreme pain; to torture. He agonized his mother by his behavior. Thackeray.