any freshwater cetacean of the family Platanistidae, inhabiting rivers of North and South America and S Asia. They are smaller than marine dolphins and have a longer narrower snout
See full dictionary entry for dolphin
river dolphin in British English
(ˈrɪvə ˈdɒlfɪn)
noun
another name for dolphin (sense 2)
Examples of 'river dolphin' in a sentence
river dolphin
Another creature left alone by the locals is the pink river dolphin, also known as the boto.
The Sun (2013)
Sail past temples and tea plantations, looking out for river dolphins and kingfishers.
Times, Sunday Times (2015)
There are so many large predators, notably caiman and river dolphins, trying to eat them that they seek safety in numbers.
Times, Sunday Times (2007)
Wild mustangs, spider monkeys and river dolphins are just some of the awesome sights we can marvel at in this new series.
The Sun (2012)
Keep watch for the fearsome caiman crocodile and piranha fish, along with giant river otters and pink river dolphins.
Times, Sunday Times (2014)
In the rainforest, there's the chance to spot monkeys, pink river dolphins and, on a night safari, big cats.
Times, Sunday Times (2015)
Local people have long known about the river dolphins, but scientists realised only recently that they were genetically different and constituted their own species.