(Zool.) Any small cetacean of the genus Phocaena, especially Phocaena communis, or Phocaena phocaena, of Europe, and the closely allied American species (Phocaena Americana). The color is dusky or blackish above, paler beneath. They are closely allied to the dolphins, but have a shorter snout. Called also harbor porpoise, herring hag, puffing pig, and snuffer.