Definition of grampus

• n. - A toothed delphinoid cetacean, of the genus Grampus, esp. G. griseus of Europe and America, which is valued for its oil. It grows to be fifteen to twenty feet long; its color is gray with white streaks. Called also cowfish. The California grampus is G. Stearnsii.
• n. - A kind of tongs used in a bloomery.