noun
grampus
GRAM-pus/ˈɡræmpəs/
A large dolphin.
The black-and-white grampus swims with its conical teeth slightly exposed.

Etymology
The ancestral compound meant ‘great fish’ or ‘fat fish,’ describing the creature by its bulk and fishlike appearance. English applied the name to killer whales and other large dolphin-like marine mammals.
More examples
- We watch two grampuses swim away from the shore.
- The guide identifies the large dolphin as a grampus.
- The grampus disappears beneath the waves.
Forms
grampus · grampuses