from the GNU version of the Collaborative International Dictionary of English
- adj. To run wildly about under the influence of hydrophobia; to become affected with hydrophobia.
- intransitive v. See under Mad.
Sorry, no etymologies found.
Oh, yes; Theseus had been himself on the voyage out; he had sacked Kolchis, and filled their hands with spoil; all had been well till the Amazon had worked her Scythian magic on him, stealing the soul from his breast in return for her charm against weapons; then he had left the fleet as a hound-pack leader goes off on the trail of a wolf-bitch at full moon, to run mad with her in the forest.