boto

play
noun bo·to \ˈbō-ˌtü\
variants: less commonly

bouto

Definition of boto

plural

botos

also

boutos

  1. :  a large, heavy river dolphin (Inia geoffrensis) native to the Amazon and Orinoco river basins that is dark gray when young and pinkish as an adult The boto—the largest of the four remaining species of river dolphin—is well adapted to its murky environment. Unfused vertebrae in its neck mean it is capable of turning its head through a range of 180 degrees, allowing it to squeeze around submerged trees and roots. — Rowan Hooper, New Scientist, 17 Dec. 2011 —called also Amazon dolphin, Amazon river dolphin, pink dolphin, pink river dolphin

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of boto

borrowed from Brazilian Portuguese boto, perhaps from regional Portuguese, “wineskin,” going back to Late Latin buttis “cask”; from its shape — more at 7butt


First Known Use: 1875


Seen and Heard

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

WORD OF THE DAY

quaintly unconventional or refined

Get Word of the Day daily email!