noun
plural ducks
[count] :any one of many different kinds of birds that swim and have a flat beak, a short neck, a heavy body, short legs, and webbed feet - often used before another noun
see color picture
[count] :a female duck - compare drake
[noncount] :the meat of a duck used as food
[count] informal :a person who you think is lucky, unusual, etc.
or ducks Brit informal - used to address someone you love
like a duck to water
informal :very quickly or easily
water off a duck's back
verb
ducks; ducked; ducking
[no obj] :to lower your head or body suddenly to avoid being seen or hit
[+ obj] :to lower (your head) suddenly
[+ obj] :to avoid (something, such as a punch) by lowering your head or body suddenly
[+ obj] :to avoid (something or someone you do not want to see or deal with)
always followed by an adverb or preposition [no obj] :to move quickly
[+ obj] Brit :to push (someone or something) underwater :dunk
duck out
[phrasal verb] informal :to leave suddenly and usually without telling anyone that you are leaving