river dolphin

noun

Definition of river dolphin

: any of various small, toothed whales (as of the families Platanistidae and Iniidae) that chiefly inhabit rivers of South America and Asia and have a rounded forehead and a snout elongated into a long beak

Recent Examples of river dolphin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'river dolphin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of river dolphin

1870

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Seen and Heard

What made you want to look up river dolphin? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to grant as a privilege or special favor

Get Word of the Day daily email!

Test Your Vocabulary

Obscure Shapes

  • a-pile-of-three-dimensional-shapes-in-green
  • Something that is ooid is shaped like:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!