from the GNU version of the Collaborative International Dictionary of English
- n. a haddock; -- so called because the black spots, one on each side, behind the gills, are traditionally said to have been caused by the fingers of St. Peter, when he caught the fish to pay the tribute. The name is applied, also, to other fishes having similar spots.
from The Century Dictionary and Cyclopedia
- n. The had dock; also, some other fish similarly marked, as the John-dory.
Sorry, no etymologies found.