Definition of Risso's dolphin in English:
 Risso's dolphin
noun ˈrɪsəʊzˌrisōz ˈdälfin
A grey dolphin which has a rounded snout with no beak, and long black flippers, living mainly in temperate seas.
Grampus griseus, family Delphinidae
Also called grampus
 Example sentencesExamples
-  At up to 4m in length, Risso's dolphin is larger than most of its companion species.
 -  And a Risso's dolphin, a stout-bodied species without a pronounced beak, is regularly sighted off the Welsh coast.
 -  Another large grey species, the Risso's dolphin, is seen occasionally off the Welsh coast and more commonly off Scotland.
 -  The area is home to bottlenose dolphins, Risso's dolphins and false killer whales, Ting said, adding, ‘sometimes rare sperm whales and humpback whales are also seen.’
 -  A pod of Risso's dolphins has been attracting considerable attention in the waters around Lamb Holm for the past few days.
 
Origin
  
Late 19th century: named after Giovanni A. Risso (1777–1845), Italian naturalist.