From Longman Dictionary of Contemporary Englishanacondaan‧a‧con‧da /ˌænəˈkɒndə $ -ˈkɑːn-/ noun [countable] HBa very large South American snake
Examples from the Corpus
anaconda• Darkness wrapped around me like an anaconda.• In terms of weight, anacondas tend to be porkers.Origin anaconda (1700-1800) Probably from Sinhalese henakandaya type of thin green snake 