a duck (aquatic bird of the family Anatidae)

Northern Vietnam form of vịt trời (“wigeon”) / a daughter, whom a family may be disappointed to have because of patriarchy (that favors boys to take care of their immediate families and extended families, and to maintain their family names), or who may possess disapproved stereotypically feminine qualities such as talkativeness, whining and nagging that's likened to a duck's or goose's quacking

a wigeon / a daughter, with implied disappointment in the fact that she's a girl, or that she might have stereotypically disapproved feminine qualities such as nagging or loquacity

(Southern Vietnam) Muscovy duck

to pretend; to play dumb

(literally) a duck foot / (by extension) a propeller (for accelerating watercrafts)

canard, hoax

platypus

(Southern Vietnam) an egg containing a developing duck embryo / (Southern Vietnam) a boiled egg of that kind; a balut

(Northern Vietnam) egg containing a developing duck embryo