a very large nonvenomous arboreal and semiaquatic snake, Eunectes murinus, of tropical South America, which kills its prey by constriction: family Boidae (boas)
Word origin
C18: probably changed from Sinhalese henakandayā whip snake, from hena lightning + kanda stem; originally referring to a snake of Sri Lanka
anaconda in American English
(ˌænəˈkɑndə)
noun
a very long, heavy South American boa (Eunectes murinus) that lives in trees and water
Word origin
earlier anacandaia < Sinhalese henacandāya, lit., lightning-stem, a snake of Sri Lanka: name later transferred to this SouthAmerican boa