porbeagle

Unclear, but likely from Cornish porth (“harbor”) + bugel (“shepherd”), with the latter element either influenced by English beagle or in fact formed from it, with only the first element truly being from Cornish.

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porbeagle (plural porbeagles)

1. A large pelagic predatory shark, Lamna nasus, of the Atlantic.
   • 1983, Richard Ellis, The Book of Sharks, Knopf, →ISBN, page 59:

     In English waters, the porbeagle is considered the premier shark to catch, but in other parts of the world it is considered a nuisance, or at best a poor substitute for its more glamorous relative, the mako.

• barge pole, bargepole, gropeable