boto

noun

bo·to ˈbō-ˌtü How to pronounce boto (audio)

variants or less commonly bouto

plural botos also boutos

: 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

Word History

Etymology

borrowed from Brazilian Portuguese boto, perhaps from regional Portuguese, "wineskin," going back to Late Latin buttis "cask"; from its shape

First Known Use

1875, in the meaning defined above

单词	boto
释义	boto noun bo·to ˈbō-ˌtü variants or less commonly bouto plural botos also boutos : 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 Word History Etymology borrowed from Brazilian Portuguese boto, perhaps from regional Portuguese, "wineskin," going back to Late Latin buttis "cask"; from its shape First Known Use 1875, in the meaning defined above
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