from The Century Dictionary and Cyclopedia
- n. The common porpoise, Phocæna communis.
Sorry, no etymologies found.
In a few moments it was all out, and then the motor-boat gave a jump forward and rushed after the herring-hog.
Mr. Choate promptly announced this to be a "herring-hog," a species of porpoise, and ordered the boat turned that way.
The creature proved to be a full-grown herring-hog, weighing around four hundred pounds, and as this species destroys great numbers of foodfish, Mr. Choate made preparations to attack it.
This act slowed up the herring-hog noticeably, but still his prodigious strength carried the craft forward.