DUCK

• duck
• 1 [countable] a very common water bird with short legs and a wide beak, used for its meat, eggs, and soft feathers
• 2 [countable] a female duck [↪ drake]
• 3 [uncountable] the meat of a duck used as food:
• roast duck with orange sauce
• 4

   take to something like a duck to water

  to learn how to do something very easily:
• She took to dancing like a duck to water.
• 5 also ducks British English spoken used to speak to someone, especially a woman, in a friendly way:
• What can I get you, ducks?
• 6 [countable] a score of zero by a batsman in a game of cricket
• ➔ dead duck, lame duck

   ; ➔ like water off a duck's back

   atwater1 (8), ducks and drakes, sitting duck

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.