What is the meaning of ?

a duck

a mark or easy target for a swindle, someone who is likely to lose at gambling or other competition

short for 鴨の味 (kamo no aji, duck flavor): a very good flavor; by extension, any remarkably good sensation or feeling, particularly describing happy married life

short for 黒鴨 (kurogamo, black duck): a male servant, such as a butler or chauffeur (compare English penguin)

a surname

any of various places, particularly in Kyoto

alternative spelling of 家鴨: a domestic duck, Anas platyrhynchos var. domesticus, descended from the mallard

duck, drake

Source: wiktionary.org