1. (Science: marine biology) a toothed delphinoid cetacean, of the genus grampus, especially. G. Griseus of Europe and America, which is valued for its oil. It grows to be fifteen to twenty feet long; its colour is gray with white streaks. Called also cowfish. The California grampus is g. Stearnsii.
2. A kind of tongs used in a bloomery.